What is the name of your state? massachusetts , my sister passed away, she was the custodial parent, the children,15 and 13. live in the house with her boyfriend and have for 10 years or more. the kids do see their dad on weekends, but now the dad says the kid have to go live with him. the kids love him but do not want to live with him,the kids want myself, (aunt) or my sisters boyfriend to be thir legal guardian. the dad is threatening to have the cops take the kids out of their home etc.