Is the ancestor's story the reason why the family apparently started a "tradition" of not treating their children affectionately? Like, bc of the way the ancestor acted, and how there was such a disparity between how the younger and older sister ended up being treated, did there end up being some event that made them go "you know what, we need to treat the kids neutrally and impartially"? Because if so, that's a total fuckton of bs. The audacity the men of these families have to treat their children like trash just on the possibility that their wives could have cheated--children should not automatically inherit the sins of their parentage...it is not the fault of the child that one of the parents cheated.
Thinking about it, it's incredible that Keira's great-aunt appears affectionate as well...I'm so confused why Keira's father is the way he is, given that her aunt seems to emote normally and all that.