What I find fascinating is Hux Sr's reaction to learning about who exactly he's having sex with - it's not disgust at accidental incest, it's disgust that something that came from him could be a whore, could be so weak.

...he's a hippocritical asshole, and I kind of want to kill him.

(just so you know, my (slightly delusional) headcanon for what happens after includes Kylo Ren visiting the brothel, curious about what could have gotten Hux Sr in such a state, and the Force hitting him over the head the first time he sees the cringing redhead. This leads to him buying the slave, determined to get to the bottom of this - and the inevitable hurt/comfort and slow romance.)