Maberly's breakthrough role came in 1993 when she starred as Mary Lennox in the feature film "The Secret Garden". Directed by Agnieszka Holland, the film achieved international acclaim and has gone on to become a family classic. This internationally acclaimed performance paved the way for several subsequent lead roles, including; Dinah Bellman in "The Langoliers", alongside David Morse and Patricia Wettig, Glumdalclitch in "Gulliver's Travels", with Ted Danson, Mary Steenburgen, Peter O'Toole and Kristen Scott Thomas, Ira in "Friendship's Field", and Vanessa in "Mothertime".