Why can't my YW leaders understand that I don't feel comfortable praying in class?

I feel like I have no friends at church, and that all the girls hate me. This is why I am so afraid of doing anything to make myself in the spotlight, giving them an opportunity to have even more horrible thoughts about me. My leaders keep trying to get me to help with opening exercises, such as giving the invocation. I am terrified of praying in front of other people, especially other teenagers. On Sunday my leader said "Chelsea, wanna do the opening or closing prayer?" It was hard, but I told her very politely that I didn't want to do either. After that she made an announcement to the class saying that if more people won't start volunteering to pray, she will start making assignments (which, of course, is the last thing I want.) I've been trying to hint that I am not at all comfortable doing that, but I don't think my leaders care. And they sort of make me feel like a bad kid for it. I'm starting to feel like they don't like me either. Help, what should I do?