My husband has custody of his 2 girls from his previous marriage. Bio mom is to get the girls every other weekend from 9am Saturday to 6pm Sunday and does not pay child support (not ordered to due to agreement between my husband and her). That's not the problem. She has shortened her weekend visits to 9am to 4pm Saturday's with no overnights. Then she's cancelled several times because "she has to work that day" and turns out, she's taking her son with her new hubby to birthday parties, fairs and events but doesn't want to deal with the girls.