Yes, she is lying. She is willing to go to great lengths to lie and get what she wants. Try not to take it personally. They all lie. Everyone of us has been lied to over and over again. It is the way it is. The important thing is for you to stay above the fray. This will all work out over time. But if she can get you to sink to her level and "wrestle with the pig" as Coach says, then it will be much worse.