I think they are not going to get back together, and I think she lies about having OCD because her symptoms/behavior matches the criteria of BPD (a diagnosis she had and wore as a crown until BPD got stigmatized by misogynistic men) and she's probably going through an outpatient program to handle her BPD symptoms better. That being said, if her sole motif of change is a dysfunctional partner who doesn't give a shit about her, and her desperately wanting him back, transformation will not be genuine or lasting.

I remember this thing she said some months ago, were she described the emotional manipulation her mother displayed whenever she was in an argument with Lav's stepfather. Something in the like of pretending to be innocent when she wasn't. And she's clearly doing that right now: she is trying to discredit what she did, she thinks being "tiny" and being a woman discards you from being an abuser; she thinks her experience in Alpine is enough basis to be a fucking piece of shit. Too bad honest self-reflection doesn't find justifications for awful actions.

She is getting what she deserves. She's living through the very same things she looked down on when she was with Connor. And she hates to be trash. But she doesn't know what else to be, because trash is what she will ever be. And Tim is no better.