If she's into American Girl, it's a great place. First floor is, of course, AG items for sale. Dolls, clothes, girls clothes, accessories, etc. etc. Displayed in very cute ways....nice to wander around. Second floor, displays devoted to each doll with their specifics stories and outfits. Also, a beauty parlor where they fix the dolls hair. It's cute - tiny little salon chairs, lots of bows, barrettes, clippies, etc. Be sure your DD brings her doll.......everyone does. Check into the beauty parlor right after you get there, it can get pretty backed up when it's crowded.
The show is quite good. The young actresses are talented and the songs really catchy. (Be prepared you'll DD will likely want a CD of the songs.)
The lunch is also nice, elegant in a little girl way and above average food. You can make a really fun half-day visit at this place. But, be sure to make reservations in advance for show and food! Have fun.