Does NC apply to my BPDxgf's entire family?

[DownandOut]

I was just wondering how everyone with a lot of experience with NC and the difficult issue of applying NC to social media has dealt with exBPD family members. I have recently broken up with my exgf who I'm pretty sure is BPD. She rebounded about 2 days after we broke up with someone I'm sure she was grooming prior to the relationship ending. I broke it off. She started rubbing her new guy in my face on social media with post upon post upon post of how she's so spoiled by this new guy and how happy she is. I honestly couldn't take it anymore and finally blocked her; however, I'm not sure whether or not to block her family members whom I had a good relationship with. Occasionally their posts don't bother me, but every once in a while I get down when I see the pics of the family that at one time I thought I would be a part of. Any thoughts?

[fiddlestix]

I am finding it a bit hard to be around my ex wife's family.  She doesn't really see her brothers (with whom I get along well) at all; they are fed up with her nonsense.  But her name occasionally comes up in context.  I fear that her dad, who has no filter, will blurt out something about her new boyfriend or something like that.  I don't want to hear anything about her and her new boy toy.  Thus I have stepped back a bit from her family. But after being a part of her family for over 25 years I love them, and they have vowed to continue to see me as a brother and son.  I am very fortunate that way.

Fiddlestix