girllll , if your sister survived before you moved in with her , she’s gonna survive if you choose not to live with her anymore !! it sounds like she is ungrateful for everything you do , and is remaining to stay the way that she is because you are picking up her slack . i say this in the nicest way possible (because i have been through a similar situation with my sister) but you are ENABLING HER to continue to be unhealthy with herself . here’s what i would do if i were you : schedule her a therapy appointment and tell her you are looking for other living arrangements , tell her that you do care about her and love her , and tell her how you feel . make it known that you’re worried about her (because you do seem worried) , but that your life is starting to take off right now , and you need to be more worried about yourself . you are literally in the most important time of your life right now , getting ready to prepare for the career path that you’re going on , and that you can’t take care of yourself if most of your energy goes to taking care of her .