The look on Elphaba's face as she turns around is close to shock; it's clear she didn't expect to see someone like Mystique cornering her in the closet. She takes a step back, furrowing her brow as she takes in the other woman's appearance and relaxed demeanour.

Her tone, when she speaks, is sharp, as if she's trying to cover up for her obvious discomfort. "Can I help you?"