This certainly is not a fun time for you, but also remember this is probably not a fun time for her either. I would ask her if there is anything going on in her life that she would like to talk about you with. If there is not anything which is keeping her back emotionally such as outside influences, then I would ask if there is anything you could do to be more helpful in the situation. Sometimes people just need their space; yet, it can be confusing when your partner does this without first telling you what is going on. Try to rebuild the way your relationship started. Try to be sweet to her and let her know you are there for her. The rest you have to leave in her ball court. I hope this helps you man.
Jacob
Jacob