That sounds like a really bad situation and I can't blame you for being upset/angry. I think what you should ask yourself is what you can do to change the situation. You (or maybe the day care provider) could file a complaint/greivance about her inappropriate behavior. It is hard to say for sure what to do (or what I would do) without knowing more about the situation. I have obsessed before and it helps me to write down on paper what my choices are to respond to the situation and then follow through and then try to let it be.