Actually, I'm still convinced that she's hiding what she's feeling. Even if it was for one page, the author has shown Yuzu being upset when Minami told others them hugging wasn't what's it looked like (remember chapter 9 I think, the last page, that clenched fist).Before this chapter I had thought that Yuzu was just better at hiding her feelings
Now I'm just left amazed by the sheer denseness of her