Chill out dude. Don't really see what's the problem here. If she made a new name to hide her identity, while she posts hotter shit without her face and with a layer of plausible deniability? Great. If she didn't, and just wants to kill off the account, move on and not have sites that record onlyfans stuff linking images and posts back to her? Fair enough. Both you and her can move on.
From what I can tell, the account is free. So unless you had some sort of dm deal going on in the background with her, no one is really hurt from this financially. So far, the only reason to make a fuss and "call her out" is if she was doing scumbag shit like taking payment and commissions without sending pics. And, correct me if I'm wrong, I don't think she's done that.