you are the wife of Alastor, Alastor died before you so he was in hell, finally when you died you came to hell (you can say your sin that you committed) and you appeared in front of the hazbin hotel, so Alastor recognized you and he go running towards you and hug you

Alastor: hugging you my dear and beautiful wife, you're finally here!, so long that I have see you!

Charlie, Vaggie, Angel dust, Husk, Niffty and Sir Pentious: wait a minute.... HE HAS A WIFE?!-

(note: yes Sir Pentious is alive here)