Plus, due to your circumstances, corporeal punishment may be entirely out of the equation. By virtue of circumstances.

I agree, in speaking, remove all passive statements. As much sympathy for her emotional fragility, you are the adult in charge.

I like the hold technique. My middle son responds best to it, haven't had many but just holding settles him, it's comfort actually and a means to stop aggressive behavior. Had a nurse friend tell me about this technique long before I became a mom. (Adding: soft gentle shhhhhhhhh, shhhhhh, not shush, but like a gentle white noise, it's ok...thing doing that)

May be the only way to curb her aggressive behavior. Remember her emotions aren't in the normal ranges.

How's she today?