Going to share my theory that Jenna MAY have left of her own will. I don't know if I believe this theory myself (I know we are all confused, and all want answers). But this is just how certain details are stacking up to me at this moment in time.
What I found surprising from the whole situation with the roommate was that apparently Jenna was on the lease, though he implied she only slept on the couch there sometimes. So where did she stay the rest of the time? Also when her family got her things back from that apartment, it wasn't a lot of stuff, mostly some clothes. Did Jenna share this apartment purely just to have an address? A place to have bills sent? I know there are a lot of things you can't do without at least having a lease in your name or utilities. Perhaps she lived more permanently somewhere else but just had the apartment for a cover.
Then we have the recovery of Jenna's car. A suitcase was in it, and brother said that she often kept her trunk full of personal belongings. When her car was recovered, there was a phone charger in it that didn't belong to a phone of Jenna's (at least not that the family knew she had). But Jenna already had 1 phone that the family didn't know about. Is it possible she had 2 "secret" phones? Jenna didn't stay with the parents a lot anymore, yet she left information out in the open at their house about her "secret" phone. Did she leave this info out on purpose? Perhaps to send a message "I have a secret phone you don't know about". So then when both of those phones went dark, Jenna could go off-grid with her 3rd phone? Perhaps she figured the family would eventually find out about her "secret" phone since it was in her name (though not her legal name - it was under the name Ruth Jenna). But still, perhaps she thought they'd still find out about it. So she left the paperwork out in the open.
We know Jenna at least drove around in her own car and her mother's, and that it was strategic (she was at least once told not to drive her mother's car, but drive her own instead to a certain area).
Is it possible Jenna was told to go into hiding? Perhaps by the person she stayed with most of the time (since she wasn't staying at her apartment regularly, nor her parents' house)? Was told to go off the grid? Was she given a new phone (untraceable to her completely) and told to dump her car somewhere away from her house, where no one would suspect, so they had a little time to get away and hide her further? Perhaps they took the tapestry with the intention to take something blatant to purposely leave a red herring and cause confusion and make it seem like a robbery. But something that could be folded small and walked out of the house, not like someone carrying a huge TV out the door and causing neighbors to take notice. Maybe Jenna was told to leave on the lights and TV to make it seem like Jenna may have left against her will. But then Jenna instinctually locked the deadbolt behind her, not thinking. Maybe the small purchases at the gas station were things like cleaning products to clean away fingerprints from the tapestry frame, around the house, cars, etc. But maybe she went to multiple gas stations so as not to cause suspicion. If she just bought paper towels at one place, cleaning spray at once place, rubber gloves at one place, etc that would be a whole lot less memorable for a store clerk who would potentially hear about her disappearance in the news than a store clerk seeing a girl purchase a bunch of cleaning supplies one night. I know if I wanted to buy something in secret I'd go to sketchy gas stations over a place like Walmart or Target because likely their inventory process/computer system isn't as sophisticated and maybe records of what exactly Jenna purchased there couldn't be deciphered.
This case is weighing so heavy on me. I'm an Atlanta local. I have a friend that lives about 6 houses down from her parents. I actually believe I've met Jenna once when she worked at the pet store. I remember a short girl with dark hair helping me there at that pet store months back. I want Jenna to be ok. So I'm trying to theorize ways in which she is out there, alive and ok... Prayers for Jenna's safe return.