>>32414331That shoe picture is fairly new, but Cynthia has always had a significant amount of foot art. It wouldn't surprise me if she's the Pokegirl with the most feet art relative to total amount of fetish art.
Makes sense when you consider that foot fetishes are generally associated with femdom, and she was the closest thing to a "dominant" Pokegirl that's also a major character before Lusamine (wears all black, position of power, final boss, big sister figure to the player, etc.).