Val,
It's so hard to know what to say. I really feel for you. I think it is fine to keep calling daily as long as your parents don't ask for you not to. I call my mom every day, but I talked to her every day before she got sick. I think your mom will say she doesn't feel like talking if that's the case, and your dad could maybe use the moral support. My dad and I are not very close, and I'm sure he feels like a fish out of water. My mom did EVERYTHING around the house and all the shopping. Anyway, good luck and know that I think of you often and include you and your family in my prayers.