Responses
The easiest way to explain it is the butterfly effect, just because they regressed doesn't mean everything will turn the same, if she had acted the same way maybe it would've turned the same way but she started a chain of events by acting the way she did with her dad, and the fl lead is at the center she started a domino effect with her changes to the original timeline.
Also why she might change how he feels about him in the next life since attitude changed and feelings change, but it's gonna take ages to forget and forgive the damage his other self did
49 this is what i hate about 'regression' story. Like why in the first life the dad abandoned the child but then he changed in the next life? You would hate him for what he did but he hasn't done anything bad in the second life. The conflict, man