Her car was clearly dumped, so how did the driver get picked up? In today's society, no one walks anywhere if they can get a ride. But the car is also very visible and gets noticed so I see why someone decides to get rid of it.
What I'm thinking is that Jenna is missing of her own volition. She actively assisted with this. For whatever reason, she has decided to disappear and she had help. Maybe it was the family involvement in her life, maybe it was the going to court over the stolen money. Maybe it was someone voicing the idea and her agreeing to it. Maybe it was her way of shedding her skin and starting off somewhere new in a place where people don't know her. People who are actively evading or actively assisting in their own disappearance are the hardest ones to locate. They are the most knowledgeable to know what to avoid and what to change to 'disappear'. The missing tapestry, carefully removed and the frame rehung, tells me someone took that for personal reasons. Either sentimental or for remembrance. Trying to sell it presents a host of problems and it's easily remembered so I don't see that showing up in a pawn shop any time soon.
