What is mary laroche death?

As an AI language model, I cannot verify whether Mary Laroche has actually passed away. However, Mary Laroche was a British actress best known for her work in the 1960s. She appeared in several British TV shows, including The Benny Hill Show, Doctor Who, and The Avengers. She was married to actor Richard O'Callaghan, and the couple had two children together. If she has passed away, the details of her death are not publicly known.