In late 2367, she was killed while investigating the effects of subspace deformations on the Enterprise-D when one such distortion formed in the deck beneath her, causing her to fall partially into it. When the floor re-materialized, her internal organs were crushed. (TNG: "In Theory")
Van Mayter was played by recurring background actress Georgina Shore who received no credit for her appearances.
She was named by La Forge in the episode In Theory. The ebook Many Splendors gives her the first name Helga.