Hi Pumpkin!

Sorry, but I must admit I LOLed when I read what the 'terrible' thing you've done to your sister was. I was expecting much much worse... Though it's good that you learnt out of the experience!

How to deal with a Nazi sister? I have no idea! It must be extremely difficult... Not sure if there are any support groups for family members of Nazi people?? Any anti-racist groups/websites that could help? Al Anon or Nar Anon sound like a good start... If you google 'support for relatives of criminals' there seem to be some websites and groups that could possibly help too? Do your parents and grandparents still give her money or attention, or why does she hang around and harass them so much?

I agree she might be 'self-curing' with drugs and such (could she be bipolar? or just narcissistic? or just 'spoilt'? I don't know...)
'Tough love' might indeed be needed... ((hugz))

But please know that hospitals and being involuntary sectioned isn't always the answer... Well, seems you already know that.. Glad your mum seems to be doing better, just know that meds can sometimes have problematic side-effects too and maybe be on the watch for that.

Sis is going to have to want to change, and I don't know how this can be accomplished? If she has become physically abusive to relatives, can she get a restraining order?
It seems she has liked provocations and getting people upset, so maybe the best reaction is to not allow her that? Don't show her empathy if she might mistake it for 'okaying' her behaviour, you can feel it but not show it and can speak stricter than you mean maybe?
Others have said it well, be there if she wants to change, but protect yourself and help other loved ones maybe if they might need help setting up boundaries with her?