Not travelling in the active, edgy world where -- at most -- only lip service is given to the notion of 'taste', one may come up halt against the nuance of type.
Let's attempt to discern? 'Slattern' refers to a woman degenerate in habits, perhaps aging before her years, of limited, low pleasures. 'Slut' points more directly to sexual activity, a woman willing to give herself often and boldly, finding excitement in the forbidden amount and pitch of desire. Near that, we find 'skank', a blend of sexual looseness and cheap taste.
Just at times when a pre-worded alert comes discreetly to an email inbox mentioning the legal notification requirements to inform of an armed robbery in the parking lot last night, less than one half-hour after leaving, one wonders at the methods of the Stazi, how inflexible would be their handling of thugs prowling through passenger cars and being miffed by inquiry at what was being done and looking up and saying something like Gimme your wallet, bitch!