Husband walked out on us four months ago?

He left me and my 2 year old daughter to fend for ourselves. He has called once to say he will come back if I get rid of "the kid" i don't think he could even remember her name. she crfies every night, i can hear her but if i walk into her room to comfort her she puts on a brave face and her adorable smile spreads across her fasce. when i ask her if she wants to know what happened between me and daddy she just says no let's just play. this little girl is keeping so much in and i wish she'd talk about it. how could he do this to us? i know he just moved away and took up with some other woman, how could he be so cruel? i can't find an address for him cuz i want to take the for all he's worth, my daughter deserves better! how can i get him for evereything he has and how can i make my daughter feel better