Katrina-Carlotta was not worried that she would fail, the way many did when attempting to tamper within the mind. The dark witch was a master of the Mind Arts. She'd been obsessed with learning them the moment she'd learnt of their existence. For a moment, the witch considered wiping Susan's memories clean, but then decided against it. Along with the two most common mind magics, the European had also conquered the art of memory manipulation. The Bones didn't even go to raise her wand, it was far too easy.
Entering the mind of the elder witch, Katrina-Carlotta began to quickly and efficiently alter Susan's memories. She would remember the duel, the fighting, the emotions, but Katrina-Carlotta herself would be nothing more than a blur. Retreating from the mind of the dazed witch, the younger woman promised herself that she'd send Susan an owl the next day. A coupon for the best kitchen supply store in Germany, with her name signed neatly at the bottom. The Hogwarts graduate would figure it out, but there would be no real proof of her own involvement.
Pleased, Katrina-Carlotta Du Hunt left in a blur of black, disappearing just as quickly as she'd appeared.