MY INNER DEMON X READER

You are Ava's older sister, you have a partner and a kid, you help you little sister to communicate in society even if she still scared, you were still there to help her in any need.
But what would happen when you found out that there where 5 Demon's in her apartment? you just have to wait and see.
(This is my first ever story so please bare with me,
and English is not my first language)