It's just about living with a disability, which impacts aspects of your life and relationships. Reflecting on this more, my feeling is they just could have explored it without her having the grant narrative be her having to find her parents as that's too similar to Finding Nemo.I haven't actually watched Finding Dory yet. I have it on my DVR. I never quite realized that Dory was mentally deficient. I always thought she was a play on the myth that "a fish only has a 3 second memory" and assumed all of her kind of fish were like that. Anyway, this is one I hope to check out sometime, even though Nemo isn't one of my favorites.
It is definitely worth a watch though!