I was thinking about the mother-daughter talk... and i have the strange feeling that this might not be an incest game and in the end you will find out that she is not your daughter at all. i know it will be hardly the case, but the feeling is there
No I don't think this will go the My New Life route and suddenly your incest will be perfectly normal.
For whatever reason, the mother only cares about what brad wants. Brad sounds like a massive douche. Which ofc writing wise your supposed to seem better. The business based arranged marriage seems a bit odd as its more of a Japanese custom than a western one in the modern age. Though I have heard its still practiced among the wealthy.
But unfortunately we have to confront and conquer Rachel as she is to be the main bad in our hero's journey. Legally, the daughter has every right to stay with her father. She was obviously born in the country of the father, making her a naturalized citizen. So the mother cannot force her to return, but given how much of her and Brad's life revolve around the daughter marrying Frank, She's going to show up.
Which would mean the mother has to have some kind of leverage over the father. The daughter knows why the father didn't contact her, that her mother has blocked her way every step so that can't be all there is. Now that I think about it, most likely the mother will develop the leverage needed. Possibly through a rejected character, or perhaps Maria, his boss, was dealing with Brad's company overseas. Either way the Mother will be a significant battle to win the daughter.
While it would make more sense for Brad to marry off his own flesh and blood relation as these thing seem to be a very eugenics concept, I don't think he can have children. D does not have siblings, and I think Brad would be the dishonest level to pass her off as his own, as she does look more like her mother according to the PC. If D's stories of the two are any indication, they fuck like rabbits so they should have to rely on contraceptives or have a dozen kids.
If anything the last episode makes me wonder how Elena will fall into all this, as she has shown she's out for what she wants and is willing to step on her friendship to get the father. She's also following the checklist of 'crazy girl with daddy issues' so hopefully we steer clear. (when we want)