My opinion, OKI'd edited my post to reflect this & then I read your post. [I'd already altered it, honest]. It seems an awkward stance but maybe the skirt needs attention, as in the tight pencil skirts I referred to in an earlier post. This might preclude the possibility of panties removal in the unobtrusive style that Sophia employed on the Bennett restaurant date.
Sophia squats down so there will be an explanation that the skirt has risen above her ass. All has to look like an "accident".

She will say in front of the class something like: Oh, I dropped my pen!
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