Reading this thread through, it seems like you are reliving the whole of the past as if the awful things are all happening to you right now, all at the same time.
Obviously the shock has dug it all up again, and I wonder if, as the shock fades, you can do some work on yourself to put some of this back in the ground where it belongs? With a counsellor or by talking to friends, your partner etc?
I'm not talking about pretending it doesn't exist in order to avoid learning from the past, like your dd is doing. And I'm not talking about deliberately erasing the reality of what you've/ she has lived through... In order to avoid the cognitive dissonance that comes with betraying yourself in the way your dd is currently doing.
I mean realizing that having all these awful memories coming at you, so raw and painful is not where you should be. And taking steps to put it all safely away back in the past, when that happens you can then let go of all that pain, raw hurt that feels so immediate at the moment.
It's like you have an army of traumatic experiences all roused at once and called up out of the past to hurt you again. To come at you again. Like a graveyard has just erupted with the dead coming back to 'get you'! And you need to be there with a shovel prodding them away from you and back into history again. Dead, buried and sealed under earth, where they belong.
And you can visit graves, tend them, leave flowers and read the gravestones. But not come face to face with something from a horror movie every time you even think back into the past! Churchyards can be beautiful, calm and gentle places, where grass and trees and flowers grow, wildlife pops out occasionally unafraid, and children play on the mossy flagstones and walk ways after church.
That's what revisiting the past should feel like. When all the horror has been left where it belongs... Away from you!
I think part of that might be realizing that no matter how your daughter behaves, this is her journey to make, and that you cannot accompany her on this journey she's chosen for herself. And you'll always love her and will be there for her for everything else, but you just cannot take this same journey again. She can only choose her own path, not anybody else's, and this is one you respectfully decline to undertake.