I used to keep it really light and would write things like: "She had trouble falling asleep" when she actually got up 400 times, woke up the other children, and knocked over my water glass while flailing around.
I've changed. I think parents NEED to know the reality of their child's behavior so we can work together to rectify it. Now I would write: "Jenny received a time out for getting off her cot mutliple times and disrupting the other children's sleep."