~Angel in hell?~

Koi, a Sinner in hell has been staying at the Hazbin hotel for a while now, but every month or so she leaves for 1-2 weeks. Everyone always had wondered why.. will they found out?
BTW first story, so it wont be much good, and yes Koi is my oc so please dont steal- also Koi was supposed to only be a sinner but for the sake of this book i changed around some things.