Mine did fine for many years. She would lay eggs, and only crowed at certain times of the year. Scared the heck out of me every time she started it back up. Unfortunately a hawk got her this year, so no more crowing hen for now. Enjoy her uniqueness.
There are instances I have read where some...
Could be something wrong with her hormones. I had a hen that would crow. The rest may still be the hen trying to dominate you, especially if she's got more male hormones than female because of an imbalance. She'll never be a technical rooster, but may act like one.