Dumb daughter
Nevermind the fact that she couldn't act, what's with screaming for her father at the top of her lungs when he was dancing? She did it at least twice, like she wasn't simply trying to encourage him but instead trying to make her presence known and have a conversation with him or something. I'm sorry, but it's just selfish to behave that way when people are performing. It wasn't about her! Normal people would watch and then run up to him after he's performed, or better yet, not tell him at all and let him have his secret.
I think it would have worked better if the daughter was a lot younger so she didn't know any better, or just over-the-moon excited and couldn't contain herself.