This page was originally going to have at least two more panels before I was like "wait, I actually have to show these things".
And, of course, the last panel is me asking the question "well, how would THAT work?"
And the obvious answer being "it sort of doesn't."
Really, though, what would the alternative be? The mirror's got to base their positioning on something when there's a size difference. Granted, it could function in a way that keeps changes to scale, but then it could miss that scaling is an enchantment, or do something weird with someone's height like stretching or squishing them in the reflections, so HA! There's going to be SOME flaw with something like this.