This manga has a really interesting concept to explain the incest. It would make sense that the driving force of her love is genetics because you know you cannot resist hormomes xD Though I agree if the mom sees her daughter as her husband I am gonna go like #@%$#$#@$$@!!@$
Eh, you gotta cross the line somehow. I do approve of bringing the idea up; it's the execution that'll make or break it(eg, maybe mom keeps telling herself this is the reason she's leaning towards her daughter as a way to keep from falling).
How much do you all wanna bet the real reason why the mom's been late was because she's starting to date a guy that she's met up with.
Holy shit that better not be the case. Why do I come up with these scenarios?
It's a pretty standard romance trope for the girl to end up going out with the "wrong" guy, who inevitably turns out to be an ass who mistreats her(and given dad strongarmed his way into a relationship, we can assume she's vulnerable to this type). If it comes out in the next few chapters, we can just assume it's another obstacle for daughter to overcome.