Mitchell has appeared twice in "Neighbours" (1985): briefly in 1994 as Cassandra Rushmore, a parachute instructor, and in the more substantial role of student Catherine O'Brien in 1996-1997.
Has lived in Los Angeles, California since 1997.
Vegetarian and practices yoga.
Woody Allen personally called her cellular phone to offer her the role of Melinda in "Melinda and Melinda" (2004). Radha was convinced that it was a prank until the script was delivered to her.