Is let her give it a go if she really wants to.
I have a similarly sensitive ds - can’t watch ‘real’ films (ie not cartoons) as too scary - he found the Sound of Music too tense and traumatic!
He went through the Harry Potter books at 8. He started them as everyone at school was reading them, and I voiced my reservations to him. He read the first one, and then wanted the subsequent ones as audiobooks. We listened mostly in the car, and I checked after each one if he wanted to continue or wait for a while. He listened to them all, and was fine with them. He hasn’t watched any of the films (he’s nearly 10 now, and still doesn’t cope well with real people films), but they are available to him if he wants to.
Is your dd sensible over her sensitive-ness? My ds hates that eg he hasn’t seen any of the Marvel films, or Star Wars, etc, as all of his friends have, but at the same time he acknowledges that he isn’t ready to watch them (his choice, not mine - he’s dc3, and while I am cautious about suitability I am not precious, my dc are all welcome to choose age suitable films if they want to watch them). Dd2 was similar, and could t watch anything real, but now happily watches all sorts (she’s 15), although makes sensible choices wet to violence, and turns off if she doesn’t like it.
So I guess it comes down to - how well does your dd know herself/her feelings? My ds was fine being given the choice, and was fine with the result of it.