I hope you yourself didn't mention his not calling. Try to underplay this if you can. Then when it's convenient, tell him how it hurt his daughter to not hear from him. Let HIM come up with explanations to her.
Well I suggest buying her a card And signing her dads name - And leave it in the door For her to find - If its important to you, next time , Remind him the day before - He should remember , however I cannot remember my mothers , so She hints to me a few weeks before-
I agree with everyone else that you should reassure her that he loves her. My son started having to deal with the absence of his mother at a similar age. She began spiraling down into alcoholism. At first she would forget/avoid events like his dance recitals. Then it turned into her not calling on his birthday and holidays. He is now 10 and she is still not part of his life in any predictable way. I still reassure him that she loves him with all he heart. We talk about her not being around and I try to comfort him, but this absence causes a pain inside of him that he can not understand. Every time she calls, out of the blue ever 4 months or so for 2 minutes, he ends up getting in trouble the following days at school. People have told me that I need to cut her out of his life at this point. I sometimes agree. Maybe you should have him read this, or if you know an older man that he respects talk to him and let him know how hurtful his actions are to a little girl. It is sad that a "man" would have such a lack of concern for his child's happiness.