The last 2 updates however have lacked the same quality of realism and are quickly venturing into the 'Meet and Fuck' aspect. With no build up or realistic desires, just ok I've met you now lets fuck.
I kind of understand what you are saying but I see it a bit differently.
From Ruby's viewpoint, the MC is, in some ways, a completely new person in a familiar body.
And, to be fair, there is a lot to like, so she is falling for him hard but at the same time she has deepseated doubts about the incest.
So all in all, it will probably be a slow burn with her, and I suspect Emma will be first.
For the Mom, the same is happening, but the taboo is even stronger.