Ann has also written a few other titles. I did read 3 Willows and liked it, though it is probably more middle grade than young adult. I have also read The Last Summer (of You and Me), which was an adult novel. She has another adult novel available, called My Name is Memory.
Click on a book cover for more information about it, including other people's reviews. I have put the books in order of reader age, starting with those appropriate for the younger readers and ending with her adult books.
Which ones have you read? What did you think of them?