Tragic tale done well
At 15, I have no problems with consensual sex being shown in movies or with any type of language, the part that made me uneasy was the spousal abuse, even if it was never shown, and finding out that all the sex scenes happened because of coercion, so that she was basically raped.
Overall, she's a positive role model for managing to escape her abuser, but only kids who are ok and mature enough to watch a very tragic story should watch this.
What other families should know
Great role models
Too much violence
Too much sex
Too much consumerism
Too much drinking/drugs/smoking