my girl is also P3. Here are some books she likes :
Amelia Jane is naughty again - Gnid Blyton
Cam Jansen - Adler / natti
A Jigsaw Jones mystery - James preller
Katie Kazoo, Switcheroo - Nancy Krulik
Fantastic Mr Fox - Roald Dahl
My girl likes to buy instead of borrow. Sometimes I have discount by my friend's school. They have box set offer, like Junie B.Jones, Cam Jansen. It around $2x for each.