Orphan Train by Christine Baker Kline

Close to aging out of the foster care system, Penobscot Indian Molly Ayer takes a community service position helping an elderly woman named Vivian clean out her home. Molly discovers that she and Vivian are more alike than different as she helps Vivian solve a mystery from her past.
This book was entertaining, but predictable.
On the subject of orphan trains, I much prefer The Chaperone by Laura Moriarity.