My 7yo daughter has big feet (UK3 US5) - a gift she probably wished she didn’t get from me! Can anyone here suggest a store, either in the parks, or online in the US where we could get her some larger size character shoes? We’ve grown out of all the ones we’ve got from the UK disney store and Euro-Disney.
My adult daughter bought Donald Duck tennis shoes at Target. I’m sure there are other stores that sell them as well. Good luck!
Have a look at vans in the UK. They did a collaboration with disney this year, lots of different character prints on amazon 
Child size will fit her. I can wear a child shoe 4.5. I wear adult 6.5.
Etsy has character shoes too.