I know who killed me by (LIndsey Lohan)?

Basically there were two twins that were separated at birth. The father pretty much bought one twin off of this drug addict lady, while the other stayed with her. Dakota is the twin that was raised by the birth mother, and Aubrey is the one the father bought. Aubrey is supposed to be the better of the two (the blue color symbolizing first place, while Dakota's favorite color is red symbolizing second place). The piano teacher (he's the serial killer obsessed with blue ribbons) gets angry at Aubrey for not wanting to continue her lessons and focus on her writing. Dakota gets pulled into it, because not only does she look just like Aubrey, so she gets mistaken for her, but she feels everything she feels, and everything that happens to her, happens also to Dakota. Even though the girls never knew about each other, they always had a special connection, and felt their whole lives that something was missing. At the end Dakota finds Aubrey, and it seems she is still alive, but I don't know if she survives, I think that's supposed to be up for interpretation.