Dd is 5.
She's a good sleeper. Usually in bed at 7:30, asleep by 8pm, wakes up 7am in school days, 8am at the weekend.
But for the last week she's been finding it hard to go to sleep, often still awake at 9 or 10pm.
I'd usually think it was the heat, but our house is reasonably cool (her room is 22 degrees).
Admittedly she hasn't had a very active day today (too hot outside) but every other day this week she's been super busy and active.
Every few nights she complains of a headache, only late at night, only when she's already awake, and seems to go away very quickly.
I just admit, I'm fraying a bit at seams, just because I know that if she doesn't sleep until 10pm she's grumpy by the following day.