She trained at the Arts Educational Schools, London and began her professional career dancing with the National Ballet of Portugal.
She continued her association with Rodgers and Hammerstein in 1998 when she was chosen by director Trevor Nunn to star as Laurey Williams in his new production of Oklahoma!
Later that year, she returned to the Menier Chocolate Factory to play the role of Gussie Carnegie in Maria Friedman's much acclaimed production of Stephen Sondheim's musical Merrily We Roll Along, which had its West End transfer to the Harold Pinter Theatre in 2013 and earned Gabrielle her third Olivier Award nomination for her performance.
In August and September 2017, she took the lead role of Desirée in Sondheim's A Little Night Music at the Watermill Theatre, Newbury.
In 2017, she took over the role of Mavis in Maria Friedman's revival of Richard Harris' play Stepping Out at the Vaudeville Theatre.
Gabrielle's on screen credits include: She can be heard on the London cast recordings of Oklahoma!, The Goodbye Girl, Fame and Carousel.