PROSPECT PARK - A Prospect Park mother is facing manslaughter charges after she allegedly killed her 4-month-old son.

Police say Karen Stewart, 20, fatally assaulted her infant son, Mark Herman, on March 24.

According to the baby's father, David Herman, Stewart had been visited in the past by the Division of Youth and Family Services (DYFS) for allegedly shaking Mark.

Herman thinks that if DYFS had given Stewart parenting lessons, as it had said it would, the baby would still be alive.