....so they are just never going to address Ayari crying and saying that she has never been so happy? the opportune love declaration moment? or reaffirm how wonderful it is to have a family. none of that?
I wouldn't hold your breath for anything romantic happening between Ayari and Sachi. There could potentially be something with Eri and Sachi, since we've had that teased a little bit and Hiiraga Yutaka has done some yuri before, but Ayari and Sachi are almost certainly not gonna be a couple.
...Actually, now that I think about it, Eri x Sachi seems quite plausible, perhaps even probable. Something along the lines of "Eri tells Ayari that she likes Sachi. Ayari helps Eri cook food to win Sachi's stomach heart."