First of all she can not be trusted. Ask yourself this question, have you treated her the same way?
If your answer is NO!, don't get used by this woman. Don't allow yourself to fall in love with her. Nothing is wrong with getting her in the sack on occassion or using her as a friend when you a friend. Such as to burrow money or to give you a ride to the air port.
But forget about a long time relationship with such a person. She don't respect you and I'm sure you don't trust her. It won't work. Move on and find your true soul mate.