Dracia Eldren was a sharp featured woman. Her long greying hair was pulled back into a severe coif. Narrowed black eyes studied the potential Princess stand-ins. Darcia was well schooled in the ways of ettiquette. She was a seasoned Mistress. Her name was well known about the different Kingdoms and Queendoms.
She was the woman you contacted when you wanted your daughter to become the well cultured and well taught pillar of nobility. She was the woman who schooled young princesses on the fine art of being noble. Dracia was as strict as they come. Years of practice allowed her to use a switch upon her subject without leaving any marks. Only a sharp stinging pain as a reminder of their failures. She lives for her work.
If you wanted to infiltrate a kingdom with a doppleganger…you needed the help of a professional. One who knew all the ends and outs of Princess behavior.
Her dark grey coat hardly never touched the ground as she walked. Her back arched and her head held up proudly. Darcia fingered the switch at her side as she studied these potentials. These potentials were of poor condition. Some of them were farmer’s daughters. Pathetic. She had her work cut out for her. At all times there would need to be at least three princess replacements in training. They would have to learn together. Eat together and train together. Every movement would have to be perfect. And she only tolerated perfection.
The local band of 'nasties' (goblins / orcs / whatever) lives in relative peace with the local population.
Along come the PCs and go through their usual heroic monster bashing routine, wiping out the nasties and pinching all their stuff, then continue on their way.
Problem is, they don't kill ALL he nasties. The survivors want revenge and, after spending a few months recovering, start to take it in their own inimitable style (which is not unlike that of the PCs come to think of it).
Next time the PCs are in the area they find themselves VERY unpopular with the townsfolk.