Check out some of the "American Girl" books on making friends, dealing with bullying, etc. Like this one. http://www.amazon.com/Smart-Girls-Guide-Friendship-popularity/dp/1609582233/ref=pd_sim_14_1?ie=UTF8&refRID=1S0RFRJY81E8TBP2Q4KT&dpID=41TpbmEUY1L&dpSrc=sims&preST=_AC_UL320_SR184%2C320_

Girls this age can be very obnoxious. One of the girls in DD's fourth grade gifted class last year was a target. Now this year, the dynamic has changed and the "Queen Bee" appears to have left the school and the other girls are behaving much more nicely, apparently.