Aaaargh! Been NC with my mother for some time due to various issues which I see as her narcissim and scapegoating of my sister which I have repeatedly challenged resulting in both of us suffering a lot of abuse over the past few years, including my mother withholding important court documents which ended up coating me c.£10k...all of which was been forgiven up until a few months ago when she supported my ex bil against my sister (her own daughter!) out of spite, I their custody battle, despite knowing he is at best neglectful ( and in my opinion downright abusive ) 
at this point I made the final decision to go full NC, no turning back.
Today it transpires my mother hasb used my other sister's Facebook account to slag myself, elder sister and brother other publicly, with further vitriol added by an aunt I haven't seen for about ten years, who knows absolutely nothing of what has gone on. This has been seen by my husband's family, my friends, colleagues etc 
I have never ever spoken about the issues outside of my immediate family but today I stewed all day and eventually messaged her (privately) basically saying 'You don't know what has gone on, mind your own business, especially on a public forum'. The vitriol I have got back is unbelievable! I always suspected my mother had ruined any chance I had at continuing relationships with the rest of the family and this has conformed it. The ironic thing is they all bloody fall out with her all the time...but apparently it is unacceptable for us to challenge her behaviour because we are her children So many things that are untrue have been said, and not just lies that have been fed to the aunt, but denial of events that I know occurred and recounting of events that cannot possibly have happened (eg me crying everynight for my dad when he left...can't have happened - they divorced before I was conceived, he left before I was born)....it's driving me nuts! !! I continually doubt myself, question myself worth, struggle to trust emotionally, have massive insecurity and thought this stuff would go away with NC.
I know fb is generally poorly regarded on here but I love it, my friends are globally diverse and it is a great way to keep in contact. Family members have now all been deleted/blocked (bar a select few)...I have moved house and no one has my address. New email address. Gonna look ok into changing phone number.
Anything else?
My heads hurts and I just feel so I want to be able to tell the truth and have people listen, believe and care.
Sorry it's long...rant over