I'm looking for a book that had The Girl With the Pearl Earring as the

[Sam A]

cover.The main's sister was named Inge I can't remember the main character's name, but she had a white streak of hair. She took care of a hare-lipped boy, and testified at Inge's trial for a witch. She told her truth, and Inge misunderstood what she meant and for most of the book, hated her. I really want to re-read this book, but cannot for the life of me find it!