Me fellow teamate, your words really resembles what I have thought even better than myself LOL. So I kind of feel relieved today while watching the stream today (still cry a lot Q_Q)From what I'm hearing, and tell me if I'm wrong:
It sounds like Ame has come to the end of the road as far as her interest as being Ame goes for now. Part of it is due to the fact that she has more things she wishes to get done outside of being Ame, but she doesn't necessarily want to drop Ame if she can come back down the line. She also goes into how she wants to try something new, and she needs motivation to keep trying new things, and I guess where she is right now at COVER has kind of left her stumped. I wouldn't be surprised if part of it is due to her living with family (and therefore not being able to have a consistent schedule at all) but it may also be because she wants to either do something with Sachi that she couldn't do as Ame due to COVER's new rules, or because she wants to something beyond vtubing as a whole, like film or theater or continue her education.
Obviously, as a teamate (forever) I will hold out hope that she may wish to fully return as Ame one day. But evidently the current COVER isn't really for her, what with the concerts and projects they want, and shutting down what she wants to do. So I'm fully in support of wherever she goes in the future.
MINOR EDIT: She said she was even thinking of going back on the announcement up until she made it, but the "ball is already rolling" on plans for the other thing, and she "can't exactly stop it now". So it may really be something like a college degree.
Something I haven't seen anybody mention is that, coinciding with her announcement of becoming an affiliate, she also updated her Sachi account on twitter again. I dunno if anything will come of it, but it seems to imply that there really may be something she'll be doing as an indie.
However for the roommate twitter thing, I believe she changes her profile once in a while though, so might be unrelated.