Why does your husband mentally abuse the kids after you have split up?

I'm sorry to hear that you're experiencing this situation. It's important to understand that mental abuse can stem from various issues, including unresolved personal trauma, a desire for control, or difficulties in coping with the separation. It's crucial to seek professional help for both you and the children to ensure their well-being and address the harmful behaviors effectively. Support from counselors or therapists can provide guidance in navigating this challenging situation.