It may not be fair, but unfortunately, that's how it is. Arguing with her isn't going to do any good. Ask her if your "curfew" can be extended on certain occasions, or what you can do to earn more trust? Couch everything carefully, and be extra respectful. What you want to do is prove your maturity level, and stick by her rules until you can get your own place some day.

You are *always* gonna be her little girl, but that's just part of having a parent who actually cares.