I mean, two of them took a picture of the thing they wanted to show her, while one took a picture of a thing in which the thing she wanted to show is. I suppose it would make sense for her to reply "you have to show me" to all of them as "you have to show me irl" but I think the last one is the one that makes sense to reply like that the most
After volume 7, the next volume was released after more than 2 and half years later. That was the most difficult time for Adashima fans; Mani's manga was canceled, Iruma-sensei rarely posted anything adashima related and it really felt like adashima was going to get cancelled anytime.
Iruma-sensei gave us volume 8. No spoilers of course, but it was the kind of volume that you didn't mind waiting for 10 years till the next book is released.