I feel your pain. I had a similar problem. My husband abandoned me over petty silly arguments, nothing serious. I was completely heartbroken. He was my first real love, the only guy I had ever fallen in love with. I was trying to contact him and he ignored me, never answered my calls nor most of my emails. Still hasn't filed for a divorce, left everything in limbo. However, now I realise that I don't want to be with a person that cannot hack a few petty arguments in life and he must have never really loved me if he is not willing to fight for the relationship, so I will let him go gladly now. They say once a person abandons, they are an abandoner! It is a form of passive aggression. You deserve better than her in life and so does your child!!