 Strallen was invited to play the role in the Broadway production of "Mary Poppins" in 2008, replacing Ashley Brown and stayed with the show until October 2009, when she was replaced by Laura Michelle Kelly.She then temporarily played the part again in the Sydney production from November to December 2011.Strallen reprised the role of Mary Poppins with two other actresses who had also performed the role, Lisa O'Hare and Caroline Sheen, for the special benefit concert of George Stiles and Anthony Drewe's songs, "A Spoonful of Stiles and Drewe", at Her Majesty's Theatre.