Probably they're actually a single person who happened to have time to TL. Well, we also try to improve our translation quality because this manga is MTL (I mean, manually translated, not machine, lol), that's why we took time for this chapter, unlike the last chapter when we tried to race with...
Probably when she realizes the MC starts to fall for the perverted kouhai (Shizuku), lol. Jk
But, well, IMO, that's normal for someone who just fell in love for the first time. The denial phase always hits hard
As a geologist, this chapter is the best so far--it rouses my geological mind. When Nagi was excited about the pentagonal dodecahedron pyrite (a.k.a. pyritohedron), I could feel the same excitement, because that small change in the geological map could mean something bigger. That pyrite form...
What I understand from the raw, what she meant was the concealing trick. She hid the food using the cloth, which she could then hide (hiding objects is considered a low-level magic trick in this story). So does when she hid the flames (but surely the chandelier flames didn't use a cloth, just...