Gained 15 pounds for her role in The Sweet Hereafter (1997).
In 2000, she added her voice to a Canadian Heritage Moment commercial for the Terrace massacre.
Frequently appears in the films of director Atom Egoyan.
Gabrielle and her husband, Hrothgar Mathews, have a son, Liam.
Her grandfather wrote for the musical stage in England, and her father was a child actor there. Eventually Gabrielle returned to England herself to study acting.
She has portrayed a large number of real-life characters, including Elizabeth I, Mary Stuart, and Hitler's favorite photographer, Leni Riefenstahl.
She has guest starred in the second episode of the first season of two different TV shows; "Deep Throat" in The X-Files (1993) and "Metamorphosis" in Smallville (2001).
Probably best known to UK audiences for her appearances as Rose in Yorkshire Television's Rising Damp (1974-78).