Hey, so, remember how this story arc is called "Balance"?
Well, that's embarrassing.
When I first wrote this page, Rhoda wasn't in it, and The Emissary didn't bother with a hypothetical scenario while asking what would be easier. He basically just asked "grow something, or shrink yourself and grow something".
I was super annoyed by how bland it was, so it was rewrite time. I thought he could give a scenario to use size magic in, and, appropriately enough, that quickly grew into a massive snowball that ended with a grumpy Grace lying on her back.
Added bonus, we get in-character sassy Grace response this way.