Hi C.-
I think your daughter is very normal. It is normal for kids to get attached to a parent and be devastated without them near. However, sometimes they also need to just cry for a little bit, which is heartbreaking. THe next time your husband has his parents watch her during work, let him leave. The grandparents and he will tell her that he IS coming back and help her look forward to it. Until then, keep her busy with games and toys and books. At nap time, get one of your husbands shirts that smells like him and let her sleep with it. It will be a kind of security blanket for her- it smells like daddy, feels like daddy, and soothes her, reminding her daddy is coming home. At night, try the shirt thing, too. If she wakes up, try patting her back instead of picking her up. Do you have one of those homemedic sound machines? Those help a little, too. I know that sometimes a child can only be consoled by one parent, but part of their growing is learning that both are equally loving and both are there to calm her. If you can stand it, let her cry for a little bit and see if she goes back to sleep. Try a pacifier and the shirt thing. I hope it works and you get some sleep.
Good luck.
-E.