Who is Sarah?

Sarah is, or was, a college girl (I imagine her to be about eighteen), who has been transformed through a botched ritual into something part human and part demon. Since her transformation she has dropped out of college and lives in a shabby bedsit in a rough part of town and makes a living as a stripper.

It's not the way she intended her life to unfold of course and she's had to come to terms with what she is.