I can understand why you feel hurt. imo it was irresponsible for her to have agreed to have contact with you over break. It doesnt matter if its a first time baby or not. A lot of bonding and caretaking goes on during the first 6 weeks. Had she not made that agreement I would say that you should let her enjoy her child since you prepared for the break but if she said she would maintain contact and hasnt thats on her. I do not think you should contact her at all. Its a delicate and intimate time for her and she still deserves some time away.