Big fan of the goings-on of this chapter, and the way the story was spun to still follow the beats of the in-universe game's storyline but with drastically changed character dynamics and perspectives is infinitely amusing to me. I also want to think that this isn't the last we'll see the little familiar, but I do not know how this is gonna work.
There's also page 230, where Lapis' whole demeanor screams to me that something is amiss. I don't think she's (still) planning on taking advantage of Diana, and conversely, I actually feel that she sincerely cares for her, but the emphasis and framing on "you haven't lost anything yet" are just screaming.
...Diana has had so much time with Natori, yet Lapis has done more in less time...
This is a really nice observation. To be honest, I thought it is perfectly clear that Natori and Lapis have a much deeper and more personal and sincere connection than Natori and Diana. This may be me reading too deeply into things and/or imposing personal beliefs/experiences on the story and characters but as an example, Natori puts Diana on a pedestal as "her favorite", as in she's still just a character from the game to her. Well, probably not "just" a character, but you get my meaning. Compare that to Natori directly exclaiming that she belongs to Lapis while clutching her hand and it paints a rather clear picture.
I do not think anyone is out of this race just yet, but the developments between Lapis and Natori have been far more prevalent, obvious, and impactful, even when Lapis is on-screen for like half a frame. It is also absolutely clear that if anyone has gotten through Natori's shell it is Lapis - "she noticed... she sees me." as well as shown in chapter 7. Diana has not yet managed to do so even though she's definitely tried, and in my eyes, it partly lies in the fact that Diana is still "just" a character.