S.H.
Think of it this way... if you don't play your part to follow through with visitation with her dad, then she may blame you one day for not "letting" her see her father... and she will have many questions about him as she gets older, whether he is involved or not. If he does not follow through, then she will learn that you were not the one that kept her from him... that it was his choice, and not her fault or your fault. You can't shelter your children from bad, sad and angry feelings... you just have to teach them what it is they are feeling, that it is okay to feel that way, and how to manage those feelings in a healthy way. This is a lifelong skill after all, and it will serve her well if you can just work out these feelings with her... she'll be better prepared to handle life situations, because we can't save them from heartache forever! Good luck and hang in there... there are some really good books on identifying and expressing feelings for little kids... maybe you could look into this?