Mallet's stepdaughter was
Louisa Radcliffe, who gained entry into the film industry by being an assistant to director
Taylor Hackford on ''
Proof of Life (2000)''. Hackford's wife is actress
Helen Mirren, a first cousin of Mallet, whose mother, Olga (nee Mironoff), was a younger sister of Mirren's father. Mallet and Mirren enjoyed a warm relationship since childhood. In her autobiography, Mirren wrote that Tania was "impossibly beautiful and kind".