What brilliant scheme has Rhoda thought of?! Is it to transform everyone OTHER than Kitty in the ways contemplated in the previous comic?

The answer is obviously yes.*

* This is a lie

Ultimately, the goal here is to get away from Kitty and then get somewhere private to try and undo the enchantments. Simply trying to hide amongst the displays with her close on their literal tails isn't ideal, particulary given that they're not SO small that they can definitely stay out of sight while there / when they make a break for somewhere to undo the enchantments.

I mean, really, the only explanation needed is "this is the best plan they thought of while being chased under unusual circumstances", but I have been asked about this, and felt I may as well elaborate here.