The most important thing is not to say horrible things about him to your daughter and if you have them to keep your own bad feelings towards him from her. I have a son who's dad has never met him. We have had no contact since i was pregnant and i have not tried to get any money from him.I am trying to find him to see if hes changed his mind about contact, but i'm pretty sure he still wants nothing to with him. I do think its best to find them for the childs sake. I do not have any bad feelings towards him and although i believe he should see his son, i understand he had his reasons for not doing so. He has to live with it and it is his loss.
My son does ask me about him (he is 4) and i have told him lots of good things about him and i say that mummy and daddy stopped being together before you were born. and that i dont know where he lives any more. At the moment he's happy with that, as he gets older i shall tell him more. I will also help him find him when he's older if he wants to. I do feel guilt about it but i know that this does not help so i just concentrate on giving my son the very best life i can.
My mum and dad split up when i was six and my mum did an amazing job on her own, however she unintentionally used to say negative things about my dad, mainly because she was hurt by him. This did affect me a lot and has taken me long time to deal with it. i really believed when i was younger that if my mum thought this about my dad she must think it of me too as i was part of him. Of course she didnt and i now know this. For a long time i thought my dad didnt want to know me, i was angry with him. i was wrong and now i do see him occasionally and am discovering who he really is and his side of the story.