Don't put her in time out in he crate.
That is supposed to be a safe haven for crate trained dogs, not a punishment.
Bella did that when she was really little. When she would open her mouth to bite at me, I would put my thumb in her mouth and hold on tounge down for a second and say NO. Its very gentle and when you do this, it is a reflex and they cannot bite down with their top teeth b/c they cannot bring the bottom one to meet it. They don't like this and they they will decide not to bite your hands b/c they don't want that. I only had to do it 2 or 3 times and she stopped. She still LOVES to take treats and all from my hand, but I tell her "easy" when she gets too excited and she is good! Hope this helps!