I forbid my youngest daughter from going when she said she might "go crazy" at the dance.
What do you think her reaction will be at not being able to go to the dance?
I don't care, but she is not going anywhere to "get crazy"!
Your daughter was just using a figure of speech when she said that she was going to "go crazy" at her dance. Telling her that she cannot attend is an overly dramatic response. Trust your daughter and let her have some fun at her dance.
I will never let that happen.
Your reaction sounds a little over the top. She will eventually want to go out with her friends and need some freedom. The more you make it an issue, the worse it will get.