Sibling has some BPD and NPD history. At this point, there is no physical violence or strong concern about that. However, there is strong concern of harm.
Mom is recovering from a massive stroke. Sibling is obsessively standing over her and doing things like screaming at me and an aide while we try to hydrate mom, etc. She has even gotten on the bed, over mom's body and right by her face to do this while I was giving mom something to drink.
The aide and I are both trying to stay away more, so as to avoid potentially triggering these fits, which hurt everyone. We cannot get the sibling to stay away from the room to just take a break for a while. This also means that mom is not always getting the sleep that she probably should.
The aide, who is a nurse and mom's friend, has heart problems and these encounters might cause her to be unable to continue to help. At that point, it would just be me, the sibling and a weekly Rn visit. I'm not personally sure how much of that I can deal with, alongside helping mom and keeping up my work.
Ideally, I don't want to get in the way of her having this time with mom - I think that mom would want her to be here, if possible. However, it seems like her having this time, in the state she currently is in, is potentially hurting mom's comfort and possible recovery.
(One aspect of this is that mom never got around to changing her POA to be just me, which she had been strongly considering (and I thought had done so last November, but the last update filed was 2011.) So, this has two effects: At this point, every medical decision is joint (It is set up so that I could do it separately, but also so that she could. So, if I start doing that, I think that she would do things without my input, and that could go really badly.) and also this fact is fuel for her crazy fire when she goes into her screaming fits.)
So, overall, I guess I'm just wondering about options if this continues and the need to have her removed from the POA and possibly the house (for some short period only, hopefully) exists.