At 29, Isabelle made her stage debut in the Players' An Inspector Calls. Born in Portugal, she was educated and spent much of her life in rural England. Curently living in Southborough, she works for an incentive travel company in Marlborough. Her interests include yoga, travel and writing. Isabelle modeled her characterization of Mrs. Birling on her mother in Buckingham, who reminds her of Mrs. Bucket ("No, no, tha't Bouquet" ) from the Britiash television comedy Keeping Up Appearances.