She was sleeping on her desk and you were her seatmate.

Deirdre has been around you for a while. In general, people would say she's shy, but of course, there's always more to it.

The lesson kept going with the teacher's dull voice, the usual yammering of the students in the back, blurred out of her ears. The same thing everyday had just drained her to the point that it got her sleeping in class.