No where does it say she was moving in with father number one.
It only says that he was there to help her move her things.
As any good father would if his child was living with a violent asshole.
And I’m sure there were no apperances to the contrary there nor something in which to draw that conclusion.
I agree the guy was a violent, as you said it, “asshole” (giving into language, really). But again, baby mamma chose to leave daddy no one (by all accounts here was more stable) and shack up to crazy baby daddy No 2, marry him, then leave him and have first daddy help with the move out.
Its not exactly like this outcome couldn’t be predicted.