Though it is pitch black inside the cave, WW can see perfectly well. Her eyes glowed a deep orange - of which she was not aware, she'd never seen herself in the dark before, after all. She makes her way quickly through the passages, having the memory of them instilled in her brain before she was even born. The caves were an ancestral memory, so she had no problem reaching her goal - a small hole, 12 feet up near the ceiling of one of the old storerooms. She clambored up and disappeared through the hole into the night.