what do other moms do?

It is always a stressful time when my daughter is about to go to her dads for a visit. She is almost 7, and we are very close. And affectionate! She is with me more than 50% of the time, but still it is too many nights that she is gone. For the sake of remaining anonymous I won't say exactly what it is, but I do have her about 65% of the time.

When we are a few days out from going, she starts to get stressed and says she has an upset stomach. I try and assure her it will be okay, and that she will come back like she always does. She always asks why she has to go, that she just wants to stay with me. I tell her that everyone has to deal with something in life that is hard. Maybe it is that your parent is no longer alive, or you have two parents who are not loving and are abusive, etc. For her, it is that she has to go to her dads even though she does not want to. And always remind her that God is with her no matter where she is.

Any ideas on what else to say? That has helped to comfort your child?