Relationships with family are one of the most difficult hurdles for some one to cope with when a person has DID, especially when there are no personal/familial boundaries in place to provide safety.
My mother must have been raised w/o any boundaries at all to have completely allowed the lack of boundaries in our family. In fact, for my siblings, the most fun of a family get-together is to find the "soft spots" of family members and then dig into them until they are raw and blistered with teasing. There is no hiding, no comfort, and no compassion.
An example would be when my ex declared he'd found a child-bride and walk away from me after 32 years of marriage. One of my brothers kept teasing me saying, "Well, what'd ya do to chase him off?" After my divorce, my older sister told me she'd help me find an apartment in the city I was attending college in. Every address she gave me was rundown, full of gangs, and tiny. I asked why she would give me those addresses because I was not going to live there. Her reply? "Well they're what you're going to have to live in, you may as well get used to it."
She was just being hurtful, I had/have money. All my family is like that. Not one of them (there are over 30, including nieces/nephews) has EVER extended sympathy for my life falling apart at the hands of someone else.
Therapy has helped me set boundaries. It's very hard to do with family, but I've found it's totally worth the effort.
My mother is really the only one I talk to. She has had a rough time learning to respect my boundaries. Everytime she crosses a boundary and makes fun of me, I get up and leave (if possible) and then I don't call or come back for several months. Then, I wait until she calls me, I don't call her. If her tone is good and boundaries are back in place, I call occassionally or stop by.
She knows what my boundaries are, we have discussed them: Don't talk about my abuse, it's not up for discussion or for you to agree/not agree with. No teasing me about my marriage, my looks, my clothes, etc. No discussing my friends and absolutely no discussion about my choice for a therapist. Never discuss my life or personal problems with any of my friends. Don't expect me to laugh at lude and nasty jokes at the expense of children, women, or marriage. Don't discuss porn-like stuff, such as "packages" or how you might like to "have that".
There are many boundaries. I'm happy with all of them and they keep me relatively safe from very uncomfortable issues, triggers, and embarassment.
My mother is at least trying to find a good place to be with me and a brother offered expertise for my house issues after I moved in. I think those two are finally learning I can be approached. The others haven't even tried to contact me in 5 years. Their loss. The longer they wait, the stronger I become at holding my boundaries in place.
Here are other posts about family abusing boundaries
It Shoulda Been a Happy Day
All In The Telling
I Don't Want Them To
Dejected and Disconnected
Happy Mother's Day
... to name a few...