By Denny Dyroff, Entertainment Editor, The Times Kristin Litzenberg Kristin Litzenberg is an acclaimed theater actress who grew up in Kennett Square and has performed all around theworld. A few years ago, she had the opportunity to perform close to home. “Sister Act” touched down at the DuPont Theatre (now known as The Playhouse on Rodney Square, Hotel DuPont, Market Street, Wilmington, Delaware,...