Maria Riva, Dietrich Daughter Who Demystified the Legend, Dies at 100 By Marketers TalksNovember 4, 2025Art She was her mother’s handmaiden and aide-de-camp. In 1993, her blockbuster biography told of the awful price she paid. She was her mother’s handmaiden and aide-de-camp. In 1993, her blockbuster biography told of the awful price she paid.