Answer
The answer is Trish Van Devere. In the 1990 horror movie "The Exorcist III," Trish Van Devere portrays the character of Mary Kinderman, the wife of Detective Lieutenant William Kinderman, the protagonist portrayed by George C. Scott. The movie follows Detective Kinderman as he investigates a series of murders linked to the Georgetown neighborhood in Washington D.C., where he encounters a possessed priest and uncovers a sinister plot.