Annah turned in early. She could certainly stay up late at night... she had studied the way of night animals and done her fair bit of meditations under the moonlight but with all the excitement of the day and all the energy consumed by being a nervous wreck, she was quick to sleep in order to wake before dawn...
A benefit of being a paranoid, nervous wreck though, is that she is a bit of a light sleeper and when something sounds wrong she wakes up with a start, grabbing at her wand.