I freely admit to having developed a fondness for Minna. This springs from a recent and inexplicable fancy I have developed for white-furred red-heads, spawned at least in part by the appearance of the white-furred, red-headed keidran wolf-girl Roselyn in Tom Fishbach's "Two Kinds" (then again I seem to like all of his wolf-girls).
Minna doesn't even deny that she's a very naughty little mouse (well, maybe a little), so it's not really surprising that she would cheerfully dress up like this, and she knows all about my fondness for booty, so of course she sticks her spotted mouse-butt in the air.
This is probably actually a tease shot for her girlfriend, Maron, and to give her big sister, Wynne, a conniption-fit.