I feel like people here underestimate just how underhanded and vicious Rose is. She's not some beat junkie bimbo getting turned out to get her next fix, she's a mother who's trying to get her child and herself out of danger. A few weeks ago she was a typical repressed housewife in a dead marriage with a loser husband, and now her whole world's been turned upside down.
Edwin is very susceptible to Rose, due to his own mommy issues and with Rose being in the same situation Vicky was when Edwin was a boy. But I believe Rose only sees Edwin as a useful idiot out of who she can fuck favors and help. It's a shame that Rose doesn't know about Vicky's circumstances, or she would be able to manipulate Edwin much more effectively.
Much like Vicky learned to enjoy the gangbangs and humilliation once she let go of shame and inhibitions, so does Rose start to enjoy her own humilliation, and the little slave/master relationship she's fostering with Edwin, as evidenced by her lust stat. But just as Vicky let go of her porn career and returned to normal life unscathed, Rose will want to forget about the Club as soon as she cashes out, and resume her normal life. And at the end of the day Edwin is just another one of her tormentors, who's also good friends with Ian, who has extensively tested Rose out before she got the gig. I doubt Rose cares about Edwin's petty struggles that led him to the club, especially given the gravity of her own situation.
Also, do you people actually think that Rose will let her daughter anywhere near a freak like Edwin, who's morally grey at best. I just think our boy Edwin shouldn't be surprised once Rose skips state after she gets the cash. The age gap is the least of their problems.
I think there are multiple things at play here. First and foremost its Rose's almost obsession about her daughter to the point it becomes almost questionable. Yes, taking good care for your kid is obviously commendable, important and the right thing to do, but for Rose it has gone so far, that she doesn't even know what to do with herself, when her daughter isn't around to be cared for. That is also the reason, why she immediately starts to take care of Edwin and/or Ian, whenever they are around.
A second aspect is that she - for obvious reasons - hates to feel indebted to someone. And I don't only mean the money she owes to the loan shark. It feels like whenever Edwin (or Ian) does something for her, she feels the need to give at least something back. A meal for example or just making them feel good through sex. For her sex is something she does seem to enjoy more and more, but it is also an easy way for her to pay someone back, even if that person just meant it as a favor and doesn't even want anything in return.
At least so far she hasn't really shown any deeper feelings towards Edward in my opinion and I don't think she has space in her heart for anyone but her daughter.
That said she won't skip state after all is said and done, since she explicitly stated she doesn't want to uproot her daughter (circling back to my first point, she is so obsessed with her daughter that she rather goes through the events in the club instead of inconvenience her daughter), but I don't see her and Edwin get into a stable and committed relationship at the end. At least not from the point in the story we're now at and if I interpret TD's comment right, not all the LI paths will lead to a "happily ever after".
I can see a happily ever after for Hana, Mina and it seems to develop for Frankie as well and probably an affair with Felicia (I mean she already is married), but with Rose? Even if she would be younger...right now I don't see a logical path to reach a ending in which here and Edwin are in some form of committed relationship.