Title: Perfect Girls (Replica 4)
Description: Description pulled from GoodReads:

Amy Candler heads to New York as a National Spelling Bee finalist. She wants to win the title, and she's psyched that her friends Tasha and Eric are coming along. The trip is going to be a blast -- in more ways than one. Wait till Amy discovers that correct spelling isn't what the organizers have in mind. Wait till she meets her "perfect" competitors. Wait till she fights to save them from themselves Amy can spell escape -- now she needs to find a way out.
Subjects: Middle School, Science Fiction, Thriller, Clones, Juvenile Fiction., Kidnapping, Juvenile fiction, Human cloning, Amy Candler (Fictitious character), Children's fiction, Science fiction, Cloning, fiction