Petite, pretty blonde leading actress and character comedienne of network television who, after a modest start in theater, soap operas and feature films ("Cutter's Way" 1981, "Wacko" 1983), played up her role of the snooty, self-centered, sickeningly cutesey yuppie Stephanie to considerable acclaim opposite Peter Scolari on the popular sitcom, "Newhart". After that show ended its run, Duffy replaced first choice Connie Sellecca as the lead of "Baby Talk", a comedy series inspired by the success of the feature film, "Look Who's Talking" (1989). Production, however, encountered problems and