“Four cities, four past romances, four stories to be told (four nearly identical hotel rooms).” That's the premise behind the Playcrafters Barn Theatre's Barn Owl presentation of Neil LaBute's Some Girl(s), and alternating between the emotionally draining, bitingly funny, viciously cynical, and surprisingly engaging, the comedy/drama might best be described as a how-to manual on how not to make amends with your past relationships.