Yeah, this chapter changed my perspective on "Mom"'s motivations too. Before this, I thought based on her fiancee suggestion that her goal was to try to make Nadeshiko more human by having her experience love.
But here, she is suggesting that human morality is wrong, and that Nadeshiko should push back against it. I mean, if Akane wanted purely a sex partner, that would be fine. However, Akane seems to want more than that. In fact, Akane is usually against having sex and wants to hang out (though the manga plays this off as "not being honest with herself" - dubious consent is popular). Apparently, "Mom" suggested the fiancee thing as a way for Nadeshiko to justify them living together (and make Akane and others feel like sex is part of their relationship). Maybe my 'human morality' is in the way here, but that's significantly less wholesome than I had hoped.
Kind of reminds me of Yokohama Kaidashi Kikou (Arguably the best manga ever written), where the world as Roland Deschain would say, has "moved on." After some unknown cataclysm, the human population is dwindling and there are fewer live births. Everything has sowed down, and the world looks more like Animal Crossing, than Mad Max.
Anyway, through some scientific breakthroughs, there is a new types of humanoid robots in the world, (referred to as "robot persons.") They are pretty much identical to humans, except for their anime hair colors. (they are also, all female except one who is a pilot.)
This is really getting long. Anyway, a production model, who calls herself Kokone, works as a courier. She always worked to emulate human behavior, (so as not to put off her clients and co-workers. She never questioned her function, or existence until she was sent to deliver a message to another robot named Alpha. Alpha runs a coffee shop, attached to her house in the country. She is also a prototype model of robot, who instead of being trained from "birth," to emulate humans, was allowed to develop her own personality and quirks.
After delif=vering her message to Alpha (robots, in this word have to touch tongues to transfer data, (and yes, I know it's silly fan service, and I don't care! Just let me have this!) The two hit it off and start an adorable relationship. Mainly, Kokone drops in, every once in a while, to hang out and they hang out and get to know each other. As they spend more time together, Kokone starts to question her life beyond her function. Her relationships with Alpha, and the humans she works with. (there is also another robot, named Maruko, who likes Kokone, and is a bit put off by how much she likes Alpha) Kokone starts to see life in a new way by being with Alpha, realizing that there are ways that robots relate and interact with each other, that humans can never understand, or replicate.
She came to the conclusion, that she didn't have to emulate humans to have value and her relationships were rich and satisfying just being herself. So, to tie it back into this chapter, maybe Nadeshiko's creator sees it in this context. There are ways humans react to one another and ways androids interact with humans. Maybe she's trying to form a bridge between those two cultures.
