Mistress Pym was Drextar Pym's wife. With Pym she had two children - namely, Dirv Pym and Kyle Pym. She was primarily addressed and referred to as "Mistress Pym", and her real name remained unknown to most.
While on the way to a diplomatic conference, she experienced am assassination attempt against her husband which involved hijacking of a magnetic lift train and the kidnapping of her two sons. Eventually, a group of spacers saved the day and apprehended the would-be assassin.