it seems unlikely but start a file collecting evidence that you are the one raising these children. Make copies of report cards you have signed, parent conferences you attended, receipts for extra activities, sports, classes they have taken that you paid for, receipts for Dr and dentist visits, day care you paid for. Do you pick them up from school or daycare every day? ask child care provider to write that down. keep receipts from clothes and shoes and backpacks you buy for them Write down every time every date that he is supposed to have them and doesnt show up, and anytime he is supposed to bring them back at a certain hour and is late. Write down every time he does have them so you have a count. Make sure you can prove everything. If he is abusive to them take them to Dr for every bruise, and take pictures, if he yells at you when he picks them up ask a friend to video tape from inside the window. Continue to stress to the girls that you are their mother and love them more than anything in the world and they have to listen to you like every other child has to listen to their mother. but don't involve them in a "I'm the better parent" "dont listen to your dad" Be more grown up then he is.