My knowledge of Peter Pan, Tink, and Tiger Lily are all fuzzy memories from seeing the play and Disney movie when I was young. I enjoyed this story regardless, but when I looked up the original plot on wikipedia near the end of reading it, I appreciated the way Anderson presented her version of the original. 
 This book is so different from other teens books I've been reading. It has fantasy and adventure, love, and enough maturity and violence to really make it a teen book. It's deeper than you'd expect, with commentary about how the introduction of an Englander and Catholicism affected the island, and insight into all of the original characters and their motivations.