Gifted Issues Discussion homepage Forums Parenting and Advocacy book recommendations?

On a thread recently there were book recommendations regarding girls relating to each other.

Last night my DD says "So I've noticed alot of time that when two girls pass each other in the hall, they each flip their hair as they look at each other. What do you think they could be communicating?" She added "hair flipping seems to be an important thing for girls".

Also we recently (possibly) figured out the mystery of why this one girl was giving her dirty looks. Turns out that another girl who has been very friendly to my DD (my DD is new at the school) is "BEST FRIENDS SINCE PRESCHOOL" with the girl giving DD dirty looks. When I told DD about possibly the dirty-looks girl being worried about losing her best friend, etc. she was like "ooohhh, okay!"

Anyway I think DD would be open at this time to reading up on the topic.

I've never been very strong at reading girl signals such as hair-flipping so I'm not much help in this department.
Which of those books or any others would be good for DD to read?

Thanks.