There was a young adult/teenage book I read a few years ago, something along the lines of a teenage girl who lives in a time when clones are considered extinct and any surviving ones are considered dangerous terrorists. Then, she learns that she is a clone, that her closest family/friends also knew, but kept it secret to protect her until she was ready. I remember the Underground Railroad had something to do with it. It was the first in a series of books.
Does anyone know what this book or the series is titled? I tried to Google it but couldn't find it.