Very nice sketches. However, as you say, they all seem to have aged. And C & F are still opposite-handed.

I am not bothered by the large feet, though, since feet do grow earlier than the rest of the body, and also the sketches are clearly from a ground perspective.
Alex' clothing also seems a little excessively muggleish for me. When I imagine pants as art of the Charmbridge code, I think of more dressy, wider pants, and then you have those sneakers ... Bu what I find most dissonant is her vest.

Unless ... she is purposefully being drawn in muggle attire, because she is right then in a muggle area.

--Geneva