Wow studentdad thats great advice!
If she is sure she wants to keep the baby you just need to be there for her and support her. Its a strange thing being pregnant, i even had a hate campaign out on my husband when i first found out i was pregnant!! ( we are ok now!!!!)
Its a big shock when its not expected and to be honest i felt like my whole world had crashed down when two lines appeared on the stick! It just takes alittle while for things to sink in and to face the reality that you are both about to become parents.
Theres no need for anything in your life to change, a babys an exciting but scary prospect.Just take each day as it comes and support her.
When you start to tell your family and friends she may find it easier to accept the pregnancy. I hope it all goes well for you in the future, take care xx

Studentdad nailed it.

Oh sweety, this is a difficult one.

I would give her some space. Perhaps write her a letter to let her know how you are feeling and tell her that you are there for her when she is ready to talk.

Good luck xx