Piper should probably be more wary, but maybe she's grown complacent in this place, in a safe barony and patrolled area. She certainly doesn't appear to be on guard against brigands through the windows. In face, the balcony door is not just unlocked, but left open a few inches for fresh air, and the satyress is clearly in view, flopped over on the bed, blankets heaped aside in a nest, and snoring, one leg danging dangerously off the side where the monster under the bed could snatch.