> Quarky and cutely clumsy (which offsets her beauty and makes her just *adorable*): check
Surely she was less Quarky than Armin Shimerman though?
Seriously though, you're reaching way too hard to try and make her fit a mold. A Mary Sue is a wish-fulfillment character, not just any female that possesses positive attributes. Heaven forbid a TV character be beautiful, have relationships, and a past!
As Jirin mentioned, Jadzia has way more in common with a Mary Sue, and even she still doesn't count as one. Not even close.