Incest Survivors Support Group
Incest refers to any sexual activity between closely related persons that is illegal or socially taboo. Consensual adult incest is very rare. Incest between adults and prepubescent or adolescent children is a form of child sexual abuse that has been shown to be one of the most extreme forms of childhood trauma. If you or a loved one is a survivor of incest, join the group...
You are starting to change your situation but it will take time. Are you discussing this with your therapist? She can not change what he does, but she can help you to deal with it in a way that is better for you.
I'm sorry I can't remember your situation exactly, but Is there a way you can avoid seeing him when he comes?