Just some thoughts:
-Doubt burglary gone bad - as LE and family says MB was target, right? If was a burglary, then why not get out of the building as soon as they realize Missy in the building? No reason to confront her, especially since in disquise.
-Head wound trauma. I would suspect gun since LE brought in dogs, but may have just been trying to track perk scent if on foot. However, I did see a WS "local" post on here that she was stabbed 20 x, and another say gun shot, then used tools to remove shell.
-I have heard that the perp is 6 feet tall. If thats true, then crime committed by a man - doubt a female. If it is a 6 foot woman, then would be easy to narrow down suspect! Very few 6 feet tall women out there- would quickly narrow down potential suspect campers, wife of camper/gym employee, family member or "friend" that would commit this crime. Many women are not good with handyman work/tools - or walk around "cocky" attitude before a crime - or choice of weapon being a gun.
-It looks like it took the perp a while to break into the building. From postings, it appears that people think the perp did a trial window break to see if alarm would go off, then broke door glass ---only to realize couldn't open door... so had to take off door knob? So they arrived much earlier than 3:50 AM video siting! Again, not many woman can do this handyman work or want to walk around a deserted church. Anyone can sneak out unnoticed by spouse at 3 am - many sleep in separate bedrooms these days or sound sleepers, or were sedated, or maybe they are out of town or work night shift. The Perp was out of there by 5, so home early. Many don't even wake up till 6 or 7 am.
-I thought that there were a few flights from Biloxi area back to Tx that the spouse could have taken, so not sure why rented a car - as the spouse pointed out the car had out of state plates!
-You can post a picture of FB listing a location, date, time - but be across the country on different day, time. And anyone who knows your FB password, can go on line and post it on your web site too! So, picture doesn't prove anything. However, if a person is in the picture then they will be questioned to verify, as would a golf course(reservation), restaurant/bar/casino (bill).
-I don't think Perp knew cameras in church. So, gate and behavior is not a show.
-The spouse didn't post anything public about last years trip. So, why now? Was the weather posting about trip being cancelled a signal to a "hired" (meaning by friend, aquaintance or family) hit to not proceed, then posting of arrival to destination a signal to proceed? Just saying.