This is the first one where her misunderstandings are 100% valid. Granted, most students wouldn't talk to their teacher about bondage with a straight face...
tbf if they were talking about some perverted stuff if not just "oh that girl's my type" they prolly wouldn't be bold enough to talk about it in a library lol, tho it would be interesting if the teacher accidentally said something super perverted and ppl thought she was being poetic in English or so lol (tho i imagine how awkward some convos are, unless the tone/kanji is diff but apparently shoujo means virgin the same way it means girl)
Dont entirely blame her for misinterpreting her tbh lol. At least she wasnt creepy about it, not like before. And I have a sneaking suspicion that that girl was a fujoshi.