My daughter is nearly 9 for some reason just lately she is refusing to brush her teeth. If I stand next to her while she brushing them (not staring or anything I'll usually brush mine too) she hums and hars and its like she's disgusted at putting the toothbrush in her mouth. If I leave her I've noticed she washes the toothpaste off. I've shown her videos and talked to her about bad oral hygiene but it doesn't seem to help. What can I do?? Shes never had any problems with her teeth before no fillings or anything.