That's an exciting development. Skankiness is subjective.
I've always associated it with a lack of discrimination as regards a woman's partners. She may have had many relationships that were psychologically healthy but ended for any number of reasons beyond reproach.
The sex tape to maintain relevance goes more to demonstrate her uselessness in general than it does her sexual moral character (though it lays that bare regardless). A girl can do slutty things and not really be a ****. She may just have issues regarding the value of fame.
On the other hand, a girl can be slutty, but not skanky. I'm sure there are two different words for a reason. You could almost make a science out of this.