Help with meltdown/opinions pls 🙏

My daughter has just had a HUGE meltdown. I was calmly trying to wake her up earlier, and she was furious, so I left her alone. When I went upstairs just a bit ago she said mom can you help me hang up something to cover the window (we don't have curtains yet) I said yea and was hanging a tapestry. I asked her to hand me the object I was using as a hammer and she slammed it into my hand like hard as hell. I said ouch don't slam stuff into my hand like that please. She said I didn't and I said you did it kinda hurt. ( I kno I should have not said anything but it just came out) then she screamed like blood curdling as loud as she possibly could type of screaming and leaned towards me screaming. Took a breathe and did it again then ran in the bathroom crying. She screamed a 3rd time I told her the police will come if she does that again... What i ended up doing is getting the tapestry hung got a snack and a drink and put it by her door and told her it was there. I know she must be have an overwhelming feeling of emotion and that happens... it just is something I wish and hope changes. (Shes 11) I don't know what to do next? Like go about this day as normal as I can ignore that it happened? lm afraid to trigger her again It affects me a lot when things like this happen. I was shaking for a long time tbh. I cried but only after I was away from her. I have ptsd and I'm autistic myself. It feels abusive and sends me back to a scary place inside to be treated this way. It triggers my trauma a lot:( I don't know how to help her. I don't know how this stuff can stop happening. Or is this just the norm? I didn't have these type of meltdowns... I had some but if I ever yelled at my mother and screamed I'd have been in such big trouble(I mean it was the 90s) So I never did. What would you do?