People seem to have the notion that kids do poorly with 2 unhappy parents being together, and that kids do better with the 2 parents being apart and trying to work out some sort of sharing arrangement.
In my experience, the situation is quite opposite. Even with bickering parents, kids benefit from a family under one roof. Just my opinion.
Bickering parents leads to the possibility that the daughters will seek husbands just like their bickering fathers. This is how is has played out with my oldest daughter who is in the verge of ending the marriage. And I fear their daughters will gravitate towards the same emotional abuser.