It's just as exploitative for a mature woman to start a sexual affair with a young teenager, as it is for a man. It's not only about sex, but the fact that she has entrapped this kid into fatherhood before he's had a chance to live for himself and decide what type of life experiences he wanted for himself. She manipulated his naivete to get what SHE wanted.

Also just a reminder. This situation is not one of pedophilia. Pedophilia involves attraction to sexually immature children. Attraction to adolescents/teenagers isn't pedophilia -- however an adult pursuing a relationship with a teen is still exploitative because of power imbalances between the two parties. There's a reason why statutory rape clauses exist and should exist.