Because I'm in a sharing mood and have some extra time:
I've put this in a few other places, so if you see it floating around elsewhere it's me. As far as I know, I'm the only one with this headcanon.
After the Job debacle, Jemima keeps trying to summon Crawley. Not intentionally, and not by way of hellish ritual or anything. She just keeps praying to God for "that funny demon" to come back and play with her.
Crawley can feel it. At first he laughs it off, but after a while it gets annoying. So one day he goes back to Job's place to tell Jemima to stop doing that to tell her that she can't be doing that. He means to tell her off, really. But she ends up showing him all of her new pottery projects. By the time she eventually ends up plaiting his hair he makes up his mind to tell her...
When Sitis comes in, wondering who Jemima is talking to. She sees Crawley, recognizes him.
"Ah Bildad the Shuhite, how lovely to see you again. You're staying for dinner of course." Then she leaves, presumably to get dinner going. Crawley is left speechless, mouth open, no words, not given a choice.
At the dinner table, he feels out of place. Ennon and Kesiah keep looking at him funny, and once or twice they try to ask questions, but Sitis shushes them. After they eat, Crawley is given an open invitation to join them again next week. He says no.
Sitis sets him a place anyway.
Each dinner he's given another invitation. Each time he declines. Each time Sitis sets him a place anyway. Each time he shows up anyway. It's almost like she's known his type before. The type who are prickly on the outside, but sweet on the inside and just wanting someone who is willing to hold them regardless of the thorns. The only other person ever to do that has been Aziraphale, and Someone Knows where he is these days.
Next thing he knows, Crawley has actually become Bildad the Shuhite: Family Friend. He is around regularly, and even Ennon and Kesiah don't mind him so much, although they still roll their eyes at him whenever they think they can get away with it.
He tells Jemima his real name ONCE. While the two of them are alone, playing Tea Party with her dolls.
She mishears "Crawley" as "Crowley."