Wagons aren't really my thing.

You ignore her request and continue on your way.

You're a knight, not a common laborer. Manual work like this is below your station, and a filthy peasant as old as her should know that.

Besides, there's a small village not more than half a day's walk from here. She can go get her own help, or wait for someone else to come by.

Your helmet prevents you from seeing the wild gestures the old witch makes in your direction, and the loud 'clanking' noises your armor makes when you walk completely masks the sound of her voice as she mutters the following:

"You must obey without a care...
...until all your flaws are laid bare..."