awwww that poor baby girl!! I can see why that hurts you so much!! We don't ever want to think our babies are crying for us when we're gone...
Have you ever considered getting another small dog? That way she would never feel all alone... And would have a playmate for those times you have to leave or work...
That might be something you could consider if you ever decide or have to go back to work full time.. There are many, many small dogs that need adopting at local animal shelters....just food for thought...
I hope you figure it out... For her sake and your hearts!