I can agree on principle that banning abortion (as it has been with many other 'bad' things) may cause negative, unintended consequences. I've always argued that the pro-life standpoint of banning abortions needs to have multiple 'outs' to ensure that the bad sides (such as large numbers of unwanted children) is taken care of via better adoption first and foremost.
But for me it (as for a lot of pro-lifers) comes down to the idea that you are interfering with the life of another, therefore it must be more restricted.
I do agree with the ways of tackling abortion. I am glad we've reached a common ground on it being a bad idea, although we still differ on how it would be tackled (we both agree on how you would take care of it, but I would go further and encourage more laws concerning parental action for minors, and in the US, repeal Roe V. Wade to ensure that abortion is a state issue and not a federal one).
In the case of your girlfriend, I can understand the issues surrounding pregnancy - I am sure that kind of situation is the case for many couples. However, if my fiancee and I were in that kind of case, we would agree that she carry the baby to term, and give it up for adoption rather than abort, and deal with that set of consequences.
Back from the dead, I'm afraid.