Leia has part of her business model based on men being captive to their lusts. She naturally uses this to exploit them, to make money. Not sure the glory holes are designed for the female patrons of her nightclub.
Having said that, Leia is not cold and reptilian, she is a thundercloud, all bruised and angry, so it could go either way, I can see plenty of evidence for either character. Kat could grow bitter over what happens, Leia could marry someone as revenge for Willi not chosing her, but that would make certain things canon, that I don't think Ocean will force.
We'll have to see. I'm thinking Kat myself, as Vanessa would still have the heterochromia gene via Kat/Scarlet/Helen's chromosones, and would still know the earrings from family gatherings.
Leia is also competitive if you remember the scene with her fighting - so yeah, ambiguous at the moment.