Pizza Art Wine’s head chef, David Dickensauge, doesn’t know how she does it, but he’s seen the scene repeat itself over and over: His boss, Vogue cover girl and international model Yilena Hernández, is up to her elbows in muck, unclogging a drain or climbing a ladder to fix an air conditioning duct in her restaurant, located at 7673 Perkins Road in Baton Rouge.