no-biz---Before you sent your daughter to preschool, did you talk to her about inappropriate touching? Did you tell her that if anyone touched her in her private areas, she should tell you no matter what? Even if the person who touched her threatened her ("I'll hurt your parents") or told her to keep it a secret? Did you tell her that she wouldn't be in any trouble if she were to tell you something happened? That you would love her no matter what? If not, it's not too late to have a talk with her about these things. If something did happen, it may prompt her to talk to you. Whatever is going on, you do need to get to the bottom of it. Since you posted your story, I have been concerned. I wish you and your family all the best.