McGrath played Cornelia in the 2003 live-action films "Eloise at the Plaza" and "Eloise at Christmastime". She has made numerous guest appearances on a variety of Canadian TV series and had a regular role in seasons one (2001) and two (2004) of "Paradise Falls". She has also voiced characters in many other animated shows, including "The Raccoons" (1991), "The Busy World of Richard Scarry" (1993-1997), "Stories From My Childhood" (1998), "George and Martha" (Valerie Chuckles, 1999-2000), "Babar" (2000), "George Shrinks" (Mrs Lopez, 2000-2001), "Peep and the Big Wide World" and "Franklin and the Green Knight" (2000).