For one, I think this issue is almost too important to get lost in here. Perhaps the mods could move it to the discussion forum, if you ask them.
The issue of abortion is such a complex one.
I don't think you did anything but speak your mind. One can only hope that you got the girl's attention, made her, and perhaps others in the same situation, think about the life that is growing inside them.
When it is a matter between free speech and life, one should always choose life.