The "American Girl" series is great.. .and is real popular with girls that age. YOu can get it from www.amazon.com
The book is called " The Care & Keeping Of You- the body book for girls." I really recommend it. It talks about ALL these bodily changes and hygiene too. It's not intimidating at all.
This series also has a book about feelings.. it's called "The Feelings Book- the care and keeping of emotions." THIS is also a great book.
ALthough my girl is not that age yet, I already bought these 2 books from Amazon... I really love the books and am glad I purchased it.
These books are made just for this age group, is friendly reading, and "cool" for girls. The "American Girl" series makes all kinds of different topics, and is really great. It is a great book for her to read solo... AND with Mom... it would be a great bonding book as well, and a way for communication to be encouraged. :)
All the best,
Susan