Our film is a gothic horror featuring a 19-year-old protagonist who is mourning her mother's death when the villain knocks her unconscious and buries her alive. She manages to escape but believes the villain is still after her. Two similar films are Kill Bill and Twilight, with Twilight also being a gothic horror about supernatural creatures. A link is provided about 9 movies featuring characters being buried alive. Summit Entertainment would be a good production company as they have experience distributing the popular horror Twilight and other non-horror films, making them a recognizable name.