It seems like it takes a LOT to win sole custody of your children. How bad does the abuse need to be and what proof do you need? Does emotional abuse count or do they only consider physical abuse? And what do they consider to be physical abuse?
Custody cases are all different and many factors are considered in an attempt by the court to sort out what is best for the children. If a parent is a danger to the children physically or emotionally they will still likely be awarded visitation with the children, and it may be supervised.