Hi Kendra,
That is a great question. It just so happens that the
Garden Grove has a dinner buffet featuring characters from the Lion King. It is a special buffet that, at least currently, is only available twice a week. I would recommend calling (407)WDW-DINE and finding out when it will be held during your up coming vacation. I have never been to the buffet, but I have reservation next Friday.
The Garden Grove is located at the Swan Resort.
We usually meet the characters in the front of the Animal Kingdom. I believe only Timon and Rafiki are available to meet and greet.
The best place for a Lion King fan is the
Festival of the Lion King. Here your daughter can see a very large Simba. If you get there very early and secure a front row seat, there is a chance that your daughter can get up and dance around at the end with some of the performers.
Have a great time