Her cell phone bill should be in the mail. Mine list all calls made and recieved, the time, where the person is calling from, where Im calling from. Look at all the calls made that day and the week before, even if you know the person ask them why they called.
I never open the door for strangers, even to answer it, unless they are carrying a bible and very old, or kids selling stuff. If it is someone I "know", Im on the phone telling someone else that so and so is here.
That being said if she kind of thinks like me, I dont think she walked out of her house and left the door open, even if it was to water plants or whatever. I dont think she was letting the dog in or out, because my dog follows me in or out, I think her dog would act the same way. I think she went outside, made the dog stay in, because she knew the person or no threat was seen.
I hope you can get her cell phone bill and see if maybe someone called her that day or the day/week before, and she knew they where going to stop by. Maybe to return or borrow something. Maybe they had some mail for her or something to sign? Did she buy fund raiser things, like popcorn, candles, cookies, books?
Last, my husband has and sometimes drives a red dually late 90s ford. Around here duallys are common. Look for auctions in your area and go post fliers there, I think one might be comming up in Washington soon. I think the hat, with the clip, and the truck should give someone, somewhere a clue as to who this is.
