you were deans kid from an accidentally pregnancy and had become deans main responsibility you were his only kid after all but something came up Dean, sam and cas had a case they had to work so who were you left with?

Well the king of hell of course crowley he wasn't exactly babysitter of the year but he'd do for now he knew damn well that dean would kill him if anything happened to you and if he was being honest he didn't hate you. Thus he agreed to be your babysitter for the day

"Hold still you little brat." he grumbled and gently cleaned your face off with a rag since you had gotten into some of his spell ingredients that he had on him and accidentally mixed them into some goop you got all over you "blah... how'd you even get into my stuff anyways darling?"