Trish's Question: I am currently in a custody battle with my ex. He still uses and sells crack and heroin. But it's almost impossible to prove. He has supervised visits right now, and he barely comes, but in a month we have to go back to court and he wants to take my daughter for weekends. He has a criminal record involving drugs and violence. What can I do to prove to he will harm my child mentally, physically and emotionally if he is given the chance. Brette's Answer: Ask for a substance abuse evaluation as well as a mental health evaluation. Ask that a law guardian or guardian ad litem be assigned to the case. Line up your counselors or doctors to come in and testify about how well you're doing.