Frustration

I have decided that the Lord gives us our children, to teach us. To help us try to understand. Ecspecially the ones who we do not share the same personality! I love Harmony to death. I think she is the coolest chick on the planet. BUT...we can definatley but heads. She is so sensitive and it drives me nuts! Every day for the past month or so, she has come home and declared, " I have had a bad day. Everyone teases me and picks on me." I give her love and tell her how much I love her etc. But it is happening almost every single day. I pick her up today, and she doesn't have a coat on. Now it is a good47 degrees outside. She had left it at school but I told her to make sure she brought it home. I get upset with her and she starts sobbing, " this has already been such a bad day and now I am getting in trouble." Patience is at a minimum. I said, " fine, I want to know EXACTLY what happened." 1) Someone was calling her Harmony Timmy Turner. ( There is a cartoon on Nickelodeon and the boy's name is Timmy Turner.) 2) two boys kept saying that she had been playing during their quiet time when she hadn't. I was like is that it? That doesn't seem that bad. So I asked her if she told the kids to stop...no she didn't. I said did you defend yourself in any way at all? No, she didn't. Totally fed up. How do you teach a kid to toughen up? Because seriously that is just a drop in the bucket. There are so many worse things that can happen to a kid but she is getting so upset over tiny things. I don't know how to deal with it. If it were me I would have told them to shut up. Now I told her not to call names but still....Grr. I think I have Harmony to teach me patience. This is a total ramble but frustrated, frustrated, frustrated! What do you do?!