Crank by Ellen Hopkins

Crank is a book about a young girl who goes to stay with her dad for the summer. While she is there she meets a young boy who introduces her to drugs (crank). She becomes so involved with him and drugs that when she goes home to her mother and family she must have the drug to get through life with her Mother, her "annoying" friends, and school. She sneaks around, skipping school, sneaking out late at night, and going out with older guys. One night, one of those boys raped her and she became pregnant. After that day she decides to tell her mother everything that really has been going on in her life, and quit doing drugs for the baby's sake.