Seen in five episodes of The Mary Tyler Moore Show (1970) as "Edie", the eventually estranged wife of "Lou Grant" (played by Edward Asner), her character was mentioned on numerous other episodes in which the actress did not appear.
A Carnegie Institute alumna, Morrill was a husky-voiced supporting stage actress (debuting in Shakespeare's Julius Caesar, starring John Carradine). She became a fairly steady matron on television from the 1970s through the 1990s.