I fail to see the logic of the initial anecdote in an article on pro-choice.
Surely pro-choice means that the woman who is pregnant has the choice to have an abortion or not. In this case the teenager made her choice. It may not have been based on science or on logic, but surely she had the right to make it herself and she did so, however much we may disagree with it. 
Why not start the article with an anecdote that is relevant to the issue of  some women not having a choice, rather than leaving the faint suggestion that pro-choice means pro-abortion.