How'd you find the talk with her, went, while she was playing with her dollies?
I can tell, it was an utmost last resort for you. And believe you, when you say you never want to do it again. You may never need to again. It's the way it was.
Is she making friends at school? It does seem like numerous school questions, curious if she's a lash out in home only type or no matter where she goes? I think it may matter, just not sure how nor why.

Can't always ward off, future moments, but trying to get to the root of her triggers can help maybe cut down on them. What do you believe brought this on, with her?