I don't consider panel one a complete disaster, and if should be apparent by panel two that she's referring to their figures being equalized. If I had infinite time, however, I would redo the panel with more of her shown to make that more immediately clear.

Puzzles

I've basically decided the point of all this isn't puzzles, and they wouldn't really be fun to show in this format anyway. I do, however, want to put thought into why they need to transform, and I like this set of circumstances that mean Nanase needs to be taller.