S.S.
My 2 1/2 yr old son does this too. He loves his toothbrush and wants to do it himself. I would give her the tooth brush and let her chew on it. She's still young. My dentist said we didn't need to brush his teeth that early. So I just let him play with it to introduce the toothbrush! :) You can use a finger brush to brush her teeth with instead.