Am a bit confused, sorry, your DD is 10...and wants to study child development?! No disrespect intended - just seems a bit, umm, forward!
However that said I remember spending hours looking through my Mum's copy of 'Baby and Child care' by Claire Rayner when I was about 10 - I am now a play worker! So hey, why not! (Have recently rediscovered this book at my Mum's and frankly some the advice it gave scares me now!!)
I'm not following a 'course book' would be at all useful really, but a fairly good atndard child development book would be one called 'Your Child's Development from Birth to Adolescence' by Richard Lansdown and Marjorie Walker. A good combination of discussion and information, with tables of areas of development and also some rather lovely photos/pictures to illustrate.