Okay--I said that I would fill you in on my second mean girl experience as a child.
I was in the 8th grade and it all centered around a boy--surprise, surprise. A 9th grader, named Barney V. (yes, his name was really Barney) liked me. I didn't like him--although he was a great guy. But, Regina H. (the mean girl) liked him and was really ticked off at me. She used to send me notes, yell at me in the hall, push me on the stairs, and corner me whenever possible. Of course, none of these things made her any more attractive to Barney.
One day I went into my Home Economics class. We each had a sewing drawer where we kept our current project. We were working on our outfits for the spring fashion show and mine was really great. No, it really was! It was a classic 70s butterfly sleeve dress. (Of course, this was in the 70s!) I was so proud of it. It was the best thing I had ever made. When I went to get it out of my drawer, I could see that something was wrong immediately. My dress was completely slashed up. Someone had taken scissors to the whole thing and had destroyed it.
Guess who?--Regina H.--Yep, she did it.
My teacher took my dress home and did a miracle job on it. I was able to wear it in the fashion show, but I wasn't able to wear it again. And Regina--well, she got suspended. And, she never did get the guy.
It's amazing how many kids deal with these kind of experiences every day at school. Most of them never talk about it with their parents or teachers until they are totally stressed out by it. That's the way it was for me, too.
As a parent , I have dealt with this as well. Both of my girls have had "mean girl" situations that they have faced. Both of them kept it from us. With Kelsey, I started noticing some depression in her, that forced me to probe a little harder than usual. With Courtney, I was informed by a teacher that this was going on. I wish that I had been more in tune with them, but, we can't always know what's going on in their world. But, I'd just say, that when your instincts tell you that something is not right with your child, most often they are on to something and you should investigate.
I've read a couple of books that have addressed bullying in girls. They were really insightful. Maybe they'll be helpful to you as well.
Queen Bees and Wannabes by Rosalind Wiseman.
In this book, the author offers parents a guide to navigating the adolescent landscape. She helps parents understand their daughters' friendships, the power of cliques and the roles of girls within them.
Odd Girl Out: The Hidden Culture of Aggression in Girls by Rachel Simmons.
The author, who visited 30 schools and talked to 300 girls, catalogues chilling and heartbreaking acts of aggression, including the silent treatment, note-passing, glaring, gossiping, ganging up, fashion police, and being nice in private/mean in public. She decodes the vocabulary of these sneak attacks, explaining, for example, three ways to parse the meaning of "I'm fat."
Odd Girl Speaks Out by Rachel Simmons.
Girls write about bullies, cliques, popularity and jealousy.
Mean Girls: Facing Your Beauty Turned Beast by Hayley DiMarco.
Mean Girls is a call to spiritual strength. A call to stand firm. It calls girls to face the beasts in their lives head on. In short, it's the answer girls need for the problem they never thought could go away.