We know that Bela is in Hell because she was taken by a hellhound. 10+ years is A LOT of time in Hell so she's probably a demon by now. I can see her working her way up to a powerful position.
One day some demons under her charge tell her how they have less deals in their area. Ill people and their relatives make up a big part of their deals but someone cures them.
Bela goes there to tell this angel, Anael, to go to an other state. Anael did plan on moving on, she've already stayed at this place for long enough, but after this demon told her to go she will definitely stay here for a while. She tells Bela to fuck off.
Bela is mad. If this annoying angels thinks she's just gonna let her stay, she's insanely wrong. They both try to kill each other a few times until a dude comes in town. He's a well known energy healer amongst humans but both women soon realize that he is a witch.
So Anael and Bela work together to kill him and after they succeed, they end up having sex to celebrate. In the morning they start making plans for ruling Hell together, and maybe Heaven, too, in the long run.













