Brushing teeth

My one year old has 4 teeth and she just refuses to let me brush them. She loves brushing her teeth and gets so excited but every time I hold up the toothbrush she grabs it from me because she wants to bite on it and brush them herself so if I go near her mouth with it she just pushes me away and grabs it. Its also very hard to take it from her at the end because she has such a strong grip and doesn’t want to give it. I’m sure it’s great that she wants to do it herself but she’s obviously not brushing them properly and the brush doesn’t even touch the top teeth. I’m stressed that her teeth are going to get bad what can i do?