The "Sometimes Mommy.." series of kids' books aims at providing children with rudimentary but sufficient insight into why Mommy or Daddy does or feels things in concurrence with their mental illness. "Sometimes Mommy is Sad" is a depiction of a mother with depression, from the child's point of view, so that they have a point of reference and relation for understanding their parent's illness.
I'm just a psychology student who has suffered through unknowns with a parent with an undiagnosed and untreated mental illness. I was also diagnosed with major depression and would like a legacy and point of relativity for my children to understand that symptoms of mom or dad's illness is never their fault. It's not anyone's fault.