When I get overwhelmed I take it once step at a time and eventually I get back in balance. You should consider disconnecting from her more, drop the phone plan and get your own. The phone company may release you from the contract if you sign another for a longer time period. If she's causing you pain keep her at arms length. Reward good behavior, like helping with the move. If she is acting selfishly, be unavailable. Actions have consequences. Be well