Actually, I'm new to the duck world also. We bought our first adult Scovies late March this year but I've been getting alot of practice observing and learning w/first 4 clutches hatched this spring and now 2 others w/one more on the way. Needless to say, we are a bit overrun w/Scovies though we have sold some and processed a few.
Though Q is by herself and it would be easier w/another Scovy to compare her size w/ she looks smaller in the pic's than our boys. The boys typically have a heavier body, legs are thicker than Q's & their feet in general are huge in comparison at that age. She has thin delicate legs & her feet are not overly large.
Also, in the first pool pic, very cute by the way, Q's head looks small and rounded, "girlish", in comparison to drakelets heads which are heavier. Q's overall body structure says "ducklet" to me. I think you have Q's age down pretty well give or take a week. I've noticed the girls feather out quicker than the boys by that age also. Go back thru some of the pic's of ducklings about that age and see if you can see a difference in head,feet, legs and general body structure & compare them to Q's.
Having said all this, watch me be wrong!
Enjoy your Scovy be it Ducklet or Drakelet!!