Sasha was born in Hong Kong to English parents. She majored in French and Creative Writing at the University of Michigan and then attended the American Academy of Dramatic Arts in New York. She has performed on the West End, at the Geffen, and off Broadway. She has starred in numerous independent films, as well as voiced the role of Miranda in The Tempest for BBC Radio 4. Narration work includes books for Dreamscape, Tantor, Bee Audio, and Penguin Randomhouse. She is married to the filmmaker Ethan Maniquis and has two rescue dogs, Pharaoh and Melvin.