So sorry for you and your family
How can you help? firstly by not catastrophizing all of her problems She needs level headed help not any kind of wringing hands ‘oh you poor thing’ sort of help
She’s come round, she’s talking, she’s safe for now, hopefully she will be offered mental health help or counselling but in the meantime just tell her how relieved you all are that she’s ok and ask her what she feels would be helpful, do not do all the “oh you poor thing we ve been so upset, you worried us so much” that will just add to her guilt and fear.
Her feelings, her emotions, her sense of things are all totally out of her control at the moment so it needs some real level headed, non emotional help and that may not come from you
She cannot and must not have to help you all with your fears and emotions You have to be the cool headed and purely practical ones and your emotions can be released in private
I hope things go better for her and you all