movie about woman who becomes prostitute and oblivious to physical pain?
 

please help me find the name of this movie iv been searching for ages.
it came out after 2000 i think but it isnt that recent,probably before 2009.
its an american movie about this fair redhead women motel owner that caters to truckers. she gets bored and starts taking to prostitution to earn extra money. once after a customer hits her and she shows no reaction and just lays there she becomes famous amongst truckers who like to hit women while aroused.
there is also a small girl in the movie that lives with her dead beat mom.
ultimately the little girl saves the red head womans life when a usual customer traps her with a gang of his friends as well. the girl or the woman gets a premonition about her being burnt alive by the main guy. swans are in the movie too...sumhow...