I'm afraid this manga has slipped away from reality in chapter 13. I mean, 2 months long timespace void
Worth noticing that isn't two months since they stopped talking, the break out was on Christmas Eve and Matsuri's visit is on early February so is roughly a month and few days (a month and half at worst). Is also not the first time they've avoided each other either, on chapter 3 Mei ignored Yuzu for two weeks and it was needed of an external factor for Yuzu to do something about it.
Do Mei and Yuzu have any life apart from each other and school? Any friends, colleagues, hobbies? Those two are like a space opera with the vacuum they live in.
Harumi, Himeko and Matsuri say hi.
We know about Yuzu's hobbies, while Mei whole life is school and recently, Yuzu. That's kind of the whole point of the story.