Leave her stuff at the door, and dont look back. In Argentina we use the phrase: “sali de ahi maravilla” meaning get out of that situation. If you have strong feelings about you gf: Get out of there as soon as possible, try to avoid stretching it, you will only make healing more hard on you, your gf seems to enjoy playing with your mind and she knows how you are feeling, given she wants to keep going says she is a manipulative person.