An apparently elderly woman travelling with the mediator Ves Alkar in 2369, presented as his mother, who is in fact a young victim of his habit of unloading his dark emotions on others.
Sev Maylor appears in the episode Man of the People, played by Susan French.
She comes aboard the Enterprise-D with Ambassador Ves Alkar, who introduces her as his mother. She is bitter and jealous, and warns Deanna Troi to stay away from him. Soon afterwards she dies. Alkar asks Troi to join him in a funeral meditation, and uses the rite to form a psychic link with her.
Alkar keeps his calm as a negotiator by passing his negative feelings to a chosen woman, who ages quickly and dies of it. Maylor was the most recent of them. When Doctor Crusher examines the body against Alkar's wishes, she finds that the supposed old woman was only about thirty and no relation to him. The discovery explains what is now happening to Troi.