Sarah was born in Northboro, Massachusetts, a small town that later became the setting for her debut novel.
At the age of ten, she decided she wanted to be a writer. (Before that, she wanted to be Wonder Woman, except with real
flying ability instead of an invisible jet. She also would have accepted a career as a unicorn princess.) And she began writing fantasy stories.
She attended Princeton University, where she spent four years studying English, writing about dragons, and wondering what
the campus gargoyles would say if they could talk. Sarah lives in Stony Brook, New York, with her husband, her children, and her ill-mannered cat.