Dad, your little girl is growing up. 
I know it looks brutal, and can be hard to watch, but honestly, I'd let it happen, at least a time or two, and see how she acts afterwards. Turn your back and don't watch.

I know it looks brutal, and can be hard to watch, but honestly, I'd let it happen, at least a time or two, and see how she acts afterwards. Turn your back and don't watch.