Here are a few more things to think about. They're not in any particular order. I'm sorry for the length, but maybe they will lead someone else to think of other possibilities.
I hope LE spoke with the full-time residents at the Eastern Point Retreat House (a private Jesuit retreat), and had a look inside and out, and all around the grounds. It is a big place on 30 acres, and the terrain around it is very rocky in some places, and there are dense woodsy areas on one side. I don't believe a retreat was taking place on 2/2/20, but there may have been people making food deliveries, or doing renovations, etc., who might have seen Abbie walking on a road, path, or on the rocky shore. I would want a list of anyone who was there for any reason on that day. Maybe someone made a delivery, happened to pass her on one of the roads, doesn't know a woman is missing from the area, and is now out of town or out of state. I would also want to check in and around all the occupied and unoccupied homes on Eastern Point. Search garages, out buildings, covered pools, under porches, etc.
Eastern Point is a very private area, and very safe. To get to Eastern Point there is only one way in. The main road in and out is Eastern Point Boulevard. In order to get to St. Louis Avenue, where Abbie lives, you have to enter Eastern Point via Eastern Point Boulevard and take a left onto Bemo Avenue which turns into St. Louis Avenue. St. Louis Avenue is one way, and it exits onto Farrington Avenue. It would be the only other way to exit (not enter) Eastern Point other than Eastern Point Boulevard. I think the Bemo Ave. to St. Louis Ave. road wouldn't be one most people would take unless you lived on one of those roads, or you were visiting someone who lives there, or knew that you could get back onto Farrington from St. Louis Ave., or were lost. Everyone takes Eastern Point Boulevard in and out. Many of the inner roads are narrow and go through woodsy and low growth areas. Some, that you think are roads, are actually roads into driveways. Some are marked dead ends, some are not, and some are one way. The fastest speed limit on any of the roads is probably 20 mph or less. (For a better map than Google Earth or Google Maps, I like the Shark Tracker app. It has an excellent map). There are also very few places for people to park on Eastern Point. There is a small parking lot across from the Beauport Museum. The museum is closed during the winter months. There is a small area to park by Eastern Point Light and the Breakwater. There is no public parking at Brace Cove Beach or around Niles Pond. Niles Pond is fresh water, and is said to have a maximum depth of 7 feet, but I don't think anyone actually knows. It's classified as a lake although it's called a pond. It's shallow enough to support dense growth over the entire surface. Around the time Abbie went missing it had a thin layer of mushy ice and some spots of open water. People skate on it if it is really frozen. There is a causeway (narrow strip of land) between Niles Pond and Brace Cove where you can walk. Brace Cove is mostly a small beach. It is filled with boulders that are just covered at high tide. It has a depth of 2-15 feet. Just outside the entrance to the cove, surrounded by roughly 35 feet of water, is a big boulder that rises up 18 feet. All along the south side there are big rocks and boulders just where Nile Pond begins. On the Bemo Ledge side of the cove the boulders are impressive at low tide.
I don't find it particularly strange that Abbie left her cell phone in the house, or that the house was unlocked (if that is confirmed). It is a very safe neighborhood, neighbors know one another, and her house is on a one way road which is somewhat secluded with very little traffic. The homes are within sight of one another. She was only going for a quick walk in an area that was totally familiar to her. She wasn't planning to be gone too long. Maybe she just wanted to get a little fresh air after cooking for her guests and before their arrival. A short walk in a familiar area to perhaps see a sunset (sunset was at 5:00 p.m.) before heading home. One of Abbie's interests was photography. If you're a photographer your eyes work as a camera even if you don't have a camera with you (Abbie left her camera at home). In photography the "magic hour" (sometimes called golden hour), is the time of day shortly after sunrise or before sunset. Most photographers think this is the best time of day to photograph. If I were Abbie, and if I had a short period of time to go for a walk, I would walk in a direction where I might see the sunset. I think it would instinctively be in the mentality of a photographer to do that even if they didn't have a camera. From her home she might have headed towards the end of Eastern Point, not towards Farrington Avenue.
From all accounts Abbie has a happy, wonderful life. She is a happy, normal person who has many interests, and is loved by family and friends. She loves the area where she lives, and has been familiar with the area for a long time. I don't think she would just decide she wanted another life, leave and disappear, or commit self harm in any way. I think the chances are slim.
As far as abduction goes, I think the chances are slim, not impossible, but slim. It would be very difficult to pull it off. I think it would be hard to abduct a woman of her age, stature and wits, who undoubtedly would be kicking and screaming, into a car, van or truck. Reports have stated she is 5' 5" and 190-200 lbs. For example, if an abduction were to take place at the end of her driveway, or in her house, someone surely would hear. If out on a path by the ocean, or in the woods, there might be a possibility. Maybe she was grabbed by someone on the rocks, fought, toppled in, or was thrown in. Maybe she was attacked on a path in the woods, was knocked on the head, killed, then hidden, buried, or put in the trunk of a car. It was just before the Super Bowl, not many people were out and about because they were at home cooking and watching the pre-game show. No one around to hear or see anything. Crazy, but if it did happen the abductor might even be a person who lives on Eastern Point, maybe someone she knew, instead of someone just passing through the area. Did she have a car, and if so where was it? I've heard no mention of her car. Maybe she decided to drive somewhere instead of walk. Maybe a friend came by to drive her somewhere to show her something. Maybe someone got lost on the confusing roads and stopped at the end of her driveway to ask for directions, and grabbed her. You can really get carried away with different TV scenarios, but they all seem far-fetched. And, really, what are the chances? I think very slim. This is a very safe place. Many homes have cameras. Anything could be seen. I wouldn't call it an isolated area as homes are in proximity to one another. Some houses are vacant in the winter. The main exit off Eastern Point is via Eastern Point Boulevard. You could also exit by taking a right onto Bemo Avenue which would bring you onto St. Louis Avenue, and then onto Farrington Ave., but as I mentioned earlier it is one way, and few people leaving Eastern Point take that route. I think someone would be taking a big risk abducting someone and then driving away. And, for what purpose? Why come to Eastern Point to abduct someone? So far there is absolutely no evidence of foul play, or reason for alarm, according to LE. Zero chance of foul play based on evidence.
The LE search was thorough and unprecedented. In the beginning the only thing that worried me was that, at the time, it was difficult for boats to get close to the shore to search because seas were 3-5 feet, winds were 15-20 kts., high tide was at 5:23 p.m., and it was dark. Now, however, LE has searched all along the coastline, Brace Cove, Niles Pond, and the Breakwater in boats with sonar, dive teams have searched for two days, and still they've found nothing. There is still the possibility that Abbie may have fallen in the ocean and eventually will be found somewhere. Initially, I also found it unlikely for a woman who was around the ocean for a good part of her life, was an avid outdoor/nature person, someone who would be aware of the dangers of the rocks, tides, weather conditions, etc., would have succumbed in that way. But, sometimes things can go tragically wrong in an instant no matter how careful you are, and some things can be out of your control. She may have tripped on some high rocks, hit her head and just couldn't stop slipping. She may have had a medical incident, become dizzy and disoriented, lost her balance, had a heart attack, or an aneurysm, etc., passed out, become unconscious. Any of these things could also have happened in the woods. Even though LE searched all over land with helicopters and thermal imaging, and by foot, maybe something was missed. She could have wandered off a path and further into the woods, and collapsed in a hole or a pile of brush. A tragic accident or a medical event which rendered her incapacitated is perhaps the most likely.
It's not easy to speculate about these possibilities or outcomes. What are the chances of any of these things happening? This mystery keeps us up at night, but we keep thinking and analyzing, and we keep searching for answers. We keep searching for Abbie.