My DD enjoyed her meal there enough to request that we go back again next time. I know she ordered an adult meal, but I don't remember which one. She did try escargot and will order it again next time, so I thoroughly acknowledge that she is an adventurous eater.
I would show your DD the menu and talk about how the menu sounds really fancy, but if you read the descriptions, many of the foods aren't really complicated. If she likes fish, chicken, or steak, she can probably find something to eat.
That said, if she is picky, you could always order her a child's meal and either pay for it out of pocket and save that credit for another meal or they would probably let you use her adult credit for a child's meal.