Do you have a Portable DVD/Movie player? It'll help pass the time.
You'd be surprised about how she'd handle a Amusement park.

Usually my son is good on car rides..he seems to be calmed by the constant motion. But when he does get bored or realizes he hasn’t gotten up and moved around in a while we have a few things on hand to help. For him we have a few cars, a tablet or phone for go to shows/movies, fidget toys like the pops, snacks, water coloring books are great for travel, and whatever else little hyper fixation he has for the moment in time. Basically just take a look at what your kiddo is drawn to and create a travel bag to their interests (:

We did buy a dual screen DVD player, noise canceling headphones, we are researching amusement parks and activities around that area that are special needs friendly.

Any favorite items and snacks from home. My son loves his iPad so the last time we went out of town we brought that.

Plushies, video games, fidget toys, and nice scents are mine :) I'm not 11, but I still feel like I am at times! 🤣