With a twist of her wrist, she covered them in illusions, Bellatrix while setting up ward after ward; the flare of magic would eventually be noticed, she knew, but Bellatrix had experience setting up traps as quickly and efficiently as possible. For the most part that simply meant she could create them with speed. Part of it, however, was her delicate touch. She could make them thinner than many curse-breakers, and they were doubly hard to sense. She layered spell after spell until, finally, they were certain nothing could get in or out without their say so.