There are just so many options. I would recommend to keep trying on BOG or at least try for FP+ for lunch if you think she'd enjoy it, but does she have any favorite characters or types of food that she really likes? I mean, for one person- having a bday meal inside the castle at CRT might be the way to go, another might be thrilled with the slapstick at WCC, and so on. We've done bday meals at everything from Chef Mickey's, CRT, and Akershus to 'Ohana, Cali Grill, and Le Cellier. I know Cali Grill doesn't exactly say kid bday, but we had a nice cake delivered for my daughter and timed it with fireworks. Just so many options depending on what she's into and what you're up for.