Ava is your older sister, she's 28 and is a nurse, since both of your parents died she take care of you and is really nice to you, she's like a mother figure, she work at night so when you go to sleep she go to work and leave you alone in the house

one night you hear noises and go see what it was, when you go in the kitchen you see Ava preparing for work, she notice you and walk over to you

"What are you doing here, you should be to bed already"