What NK said.
One thing you may wish to consider: we teach people how to treat us. For whatever reason, you have taught Rage her behavior toward you is acceptable, or at least that you will accept it. If it is no longer acceptable to you, teach her that.
It sounds to me like you, Marius and Rage met up along the path from adolescence to adulthood and the three of you traveled together for a while. For reasons that seemed good to each of you, you and Marius have continued along that path, while Rage has set up camp somewhere in the land of adolescence and wants you to keep circling back to keep her company and bring her supplies.