I get the "oh no, he's got it too" thoughts with my 7yr old son sometimes. The beauty of it is that you're aware and can help your child cope. That encourages me. When my son comes to me with irrational scary thoughts in the middle of the night, I get out of bed and go lay down with him. We lay on our backs have some Father-Son dialog and I talk him off the cliff so to speak. Then we say "Good dreams" and I go back to my bed. That works every time.
With the tooth brushing, I say make the most of that time and don't make a big deal of it. Sit next to her on the toilet and chat with her about the day or anything while she's brushing. I'm no expert either, but I do think that the bigger deal we make about things the bigger they become. If she had a ton of other social issues then there may be room for concern. This sounds like an opportunity to me. Your concern proves you're a great mom and will take any necessary action should things get out of hand.
"Good Dreams"
