So I am studying abroad and share an apartment with a friend. We signed a combined lease for the year, which officially ends on the 31st of May. My mum is flying over here around the 26th of May to help pack up, end the contract and take a short holiday before flying home. 

However, my roommate came to me today to say that she was planning on leaving on May 19th, which is the day after our university officially ends. She was hoping to pay a reduced rent for leaving early, but because im going to be staying longer she has to pay the full rent for the month of May. The landlord has said we can only pay a reduced rent if we get new tenants in straight away after we leave.

She is now saying I should leave and go somewhere else so that we can save the money, i.e. put my things in the basement and sleep somewhere else. She said that I am forcing her pay more because of my plans. I just think its ridiculous go to all that trouble to save her 100 bucks, when the apartment is still equally mine until the 31st and I should be able to stay until I’m ready to leave.

WIBTA if I told her that Im not leaving early and that she is going to have to pay her rent in full?