Just a little bit more info. The gift shop at HH is not very big. But there are things for children, they even have pet souvenirs! So I bet she'll find something she would like to have.
They have a little bit of everything. There are Tshirts for adults as well as kids, but the selection is much more limited than shops found at WDW. If I remember correctly (we went in Nov 2005), there were clothes for kids and adults, games, toys, kitchen items, pet items, Christmas ornaments, beach-themed merchandise (i.e. buckets/shovels, swim goggles, beach towels), pins, postcards, antenna toppers, DVC merchandise, food items like you would find at other DVC locations, books, magazines, and probably a lot of other stuff I don't remember.