Leeva at Last by Sara Pennypacker
 
Leeva is inquisitive, curious and bold… “what are people for?” she asks. Her parents reply: money! fame! But when Leeva crawls through the garden hedge, she discovers a whole world of people who are worth much more than that.
 
On the other side of the hedge, Leeva discovers a huge and vibrant library, where she meets librarian Mrs Flowers and her nephew Harry. Suddenly, Leeva is surrounded by all the books and cookies she could dream of - and friends she has always hoped for. On an important quest to collect cookie ingredients with Harry, Leeva also befriends a risk-averse boy called Osmund, a girl named Fern who shares Leeva’s love for books, and an orphaned badger.
 
Read Mia's full review here