I believe she's the yangire type. From what i've seen of her it would make a lot of sense.I am in the camp that Lily is good people. She is just ambitious and ruthless at getting her goals. The earlier EP10 preview (Lily path, no other sides or influence) departs from the end of EP9 where she says, "don't fall in love with me".
For her, it is possible she is in love with MC.