Donna Randall is a character in DEXTER. She's portrayed by the actor, Beth Grant.
Fifteen years ago, her son, Wayne Randall, went on a killing spree with Hannah McKay. Before he was arrested, he sent his mother some cash and souvenirs from his kills to hold for him. She spent the money long ago, but after Wayne committed suicide. she turns over the tokens to Miami Metro Homicide. (Buck the System)