ehh19, it sounds like you're doing everything you should be right now. You are being quite mature about the situation you're in, and that's absolutely wonderful to see. The initial shock will wear off soon and you will both be able to come to a decision together. Just keep supporting her - it's absolutely what she needs from you right now.
A friend of mine was raped at 14, became pregnant from the attack and gave birth to a daughter, whom she gave up for adoption. Said friend is now 26 and happily married. In fact, she just had her third child with her husband on Thursday. My point is that, while abortion is definitely an option, so is adoption. Many adoptions now are open, meaning that you can maintain some level of contact with the adoptive family if you wish. Just keep this in mind
Also, you really don't
have to look at this pregnancy like it's a horrible mistake. If your relationship is strong and the feelings you have for her are reciprocated, then wouldn't you agree that it's possible that this may not be a bad thing, but potentially a very positive addition to your relationship and your lives? I'm definitely not saying that a baby is a cure-all for relationship woes, or that it will be easy raising a child together, because it's not and it won't be. What I
am saying is that it sounds like you have a healthy relationship with your girlfriend, and that you are mature for your age, so it's quite possible that, with the appropriate effort, you may be able to keep your girlfriend
and your child and have a very loving family.
Ultimately, as you said, it's her decision whether or not to continue with the pregnancy, and you are definitely doing the right thing by supporting her while she makes her decision. Keep the lines of communication open and remember that you have several options, and that this little "surprise" is most definitely NOT the end of your lives.
And please keep us posted about your decision. I'm sure we'd all love to know what you and your girlfriend decide to do