A part of me wonders if there is some facet of tone in the original Japanese that doesn't quite carry over in English (due to the relative constraints of the latter language when it comes to nuance and subtext in "levels/forms" of speaking between people) - because on the surface, Yano speaking up about the cafe idea ...didn't strike me as particularly objectionable.
Though her immediately jumping from "I should be a part of the wait staff so I can help teach others about it" to "we should probably have X or Y number of people serving, unless it gets busy...." could have come across as pushing too far into the planning stages when they were still deciding on the concept itself.
Everyone around her dogpiling her out of the blue, though--I believe that's a consequence of them all knowing her over time, and how she is. Even if she's getting a bit better at the 'social game', Yano's personality is a known quantity in her class. They're still reacting to her based on what they historically know/interpret, and don't see her actively attempting to speak up, speak out, and "fit in" more.
Add on the confusion of the boy who confessed speaking up in her defense, someone else chiming in about him liking Yano and teasing him, the class going into an uproar, and Yano yelling out about how that's not relevant...and it all understandably spirals from there.
She is making progress, though. Her friends, even if they're gonna be "in her corner" about it, should know better than to outright lie to her face about how she's doing. Unfortunately, she's gotta fly by the seat of her pants in a lot of ways, and most people around her aren't going to give her grace in this, it seems.
I hope Yano figures it out and finds a safe way to learn and practice, though.
That aside - her being so direct to Hime is really refreshing, and I hope it continues. Hime also needs a kick in the pants to stop tiptoeing around this deal between her and Yano. She's got a fair bit on her plate, sure, but this can't be run away from. Doing so would just repeat the problems from before, and they've both put in the work to even reach this level of ease around one another after those years of estrangement.
Yano's putting in all this work for her sake, but also for Hime. So it's Hime's turn to reciprocate that, and take some time to really delve deep into what she wants and how she envisions this going, and what she would do if things were to fall apart again for the two of them.
But I'm glad this is continuing on. Hope that means the author's in a good place, and has found a pace of work that suits them.
Thanks for the TL as always.