It had a cold, adult quality that no fifteen-year-old girl could ever achieve.

A fifteen-year-old girl, witness to the massacre of her family.

He didn't know how to talk to a fifteen-year-old girl.

He had never been able to take in the fact that she was a fifteen-year-old girl.

Right from the beginning she had never talked like a fifteen-year-old girl.

This wasn't an answer that a fifteen-year-old girl would give, it was a woman's reply.

Why on Earth would anyone let a fifteen-year-old girl make such an important decision?

He married one of these, a fifteen-year-old girl at the time the relationship began, attracting press attention.