No giving up on a dysfunctional family is not required for healing. Many survivors don't shut out their families. partly because they have reached a point already in their healing to understand that things are not always "if you don't give up the abuser you are siding with the abuser and in order for me to heal you must give up this that and the other to be in MY life not theirs" kind of thing. Many survivors that I met couldnt understand why I was not asking and forcing my mother to give up on my step father, and at times having contact with her while she was still with him. But I was at a point where I knew my mother choosing him over me does not prevent me from getting the therapy and so on that I needed and it didn't prevent me from keeping myself safe from him. I also knew that there may be a possibility that yea he abused me but he may be non abusive with her. and also I respect the fact that it was her life if she choose to be with him with or without abuse happening thats her choice for she was an adult. I certainly wouldn't want someone telling me to choose them or my loved one for who I date and fall in love with is my business and no one elses. They don't have a right to tell me who to be freinds with or love and the same for me I don't have the right to tell my non abusive family members who they can have contact with and so on. When my family and I split it was based on what was happening to me and what I needed to do to keep me safe. The only ultimatum I gave was to my abuser that he stay away from me. The others choose to follow suit. and I was in therapy and healing for years before this happened. so I know from personal experience that cutting off family is not always going to prevent a person from doing what they need to do for thier self.