Also: Ex-Byrd flies into area for solo gig By Denny Dyroff, Staff Writer, The Times Unionville High School graduate Kristin Litzenberg performs with the national touring cast of ‘Sister Act,’ which opens Oct. 14 at The DuPont Theatre in Wilmington. When “Sister Act” touches down at the DuPont Theatre (Hotel DuPont, Market Street, Wilmington, Delaware, 302-656-4401,http://duponttheatre.com)...