Would u move out?

i am not happy with the situation i'm in with my roommate. she is really messy and inconsiderate with everything in the apartment. she has never picked up the broom since we've lived there in hte last year and i have one more month with her i have the option to move back home and i want to but it'll be like a waste of a months rent since the last months rent was already paid for when we first moved in. should i just suck it and and stay one more month or leave so i can save my sanity.