Jenny froze the moment she heard the humming echoing through the cold marble halls. At first she'd thought it was another mewling sound in the vicinity of her stomach but when it continued, her smile faded quickly into wide-eyed fear. It didn't immediately occur to her that there were possibly people staying in the building because she'd been holed up in one back corner or that someone might be stopping by for a book to read out in the sun. As creative as her mind was, it should have, but she was still in full fear mode.
She stopped moving, her fingers trailing the edges of bookshelves at the far end of the stacks in the main room with the trees. She'd considered coming through there to find what she was looking for and if she wasn't able to find it there, she could go out the front. The back of the building seemed less safe even though it wasn't like the front was any more public with so few people in the town.
Her fingers caught on the warped binding of a book that looked to have been damaged by water. Jenny caught her breath as the tome fell onto its neighbor and, in an otherwise lovely domino effect, several others. Then, as if the noise she had made couldn't get louder, all the falling books dislodged and clattered to the floor with a booming thud. Jenny squeaked and covered her mouth with both hands.