Maybe other parents of little girls ( I only have boys) can help you, but I know last trip I was determined to go, so at least I could see the "Evil Queen" somehow....

even if only a cutout form.
My DS 23 and friend thought it was too young for their taste, but had gone on PeterPan and Dumbo just 30 minutes earlier...(only to humor me)
They decided to pass, asked my DS (then 9) to go, he refused, he had heard for years (when we make our plans-that some kids don't like it due to being scared), he went with older boys.
So, I , as a 39 year old, went and rode by myself. Of course, I wasn't scared, but could see how it might upset younger folks.
Only you and yours will know what she "may" be able to handle or not.
I know not much help, but I'll bet my 9 year old son didn't do it because he heard it may scare younger guests.
See if there is some type of swap, ride yourself or have other parent ride, decide at that time.