We briefly fostered a little 7 year old girl before sending her home to Mexico (long story) and after being in the US for two years she was worried that there wouldn't be any Walmart for her to go to. She had a whole list of brand names which we had to confirm were available in Mexico. Fortunately we found a Walmart within 20 miles of her home. I think that made it a lot easier for her to make the trip home.
That should solve all her problems.