The only future I can see for tubbo is methmomma coming to help her pack her up and arrange for cargo transport to Bumfuck, Oklahoma. Fat Al has never had to figure out moving (getting boxes, packing, hiring movers, deep cleaning the empty apartment, etc.) on her own and since she's the size of a buffalo, it might just kill her if she has to now. I don't believe Wipey is going to do all that; maybe she'll help with some of it but I'm sure she's not on the lease and she'll be fucking off back to wherever as soon as possible. The only person Al can even slightly count on is methmomma and who knows how much she should be relying on her.
Unless another caregiver comes out of the primordial ooze, Al has no one. She's got decreasing income, decreasing mobility and worst of all, she's flat out stupid. What most people know how to do and handle by the time they're 18, she still can't figure out because she's glommed on to people willing to do it for her and her IQ has never risen above room temperature. Her future is going to be a crappy apartment where she sits on her ass all day ordering delivery for every single meal. If she's lucky there'll be some dummy in her orbit to help her when she inevitably needs to go to the hospital or Wommart.
She needs to spend some serious time rethinking what her worth is right now and do something to improve it. For what it's worth, I'm not sure I ever believed the poly storyline but I do think Jade Francis is probably bi and after nearly two years with a sexless huffalump, she's going back to dick.