It is genuinely impossible to guess who this mysterious lady could be. There are no clues whatsover. NONE.

And I guess she likes candy. Annnnd...

OH! Okay. There's a thing. I have no idea how she's supposed to get back outside of the shop again. The door opens inward, which is weird for a public building in the first place, and there's no handle on the inside. By all logic, she should be trapped in the candy store forever. Given that she clearly escaped, however, she must have broken one of the windows while powered by sugar.

That, or we can remind ourselves that this was a 2003 comic and sometimes you just gotta roll with the art weirdness.

Commentary added December 22