Dark

Right at the mark of turning 55 months, Abby refused to go to sleep and woke up multiple times at night and forced herself to stay up. She insisted for me to sleep with her. I thought her jet lag was getting better (woke up only at 5AM the night before). Couldn't figure out why it was back to square one.
The second night after trying all sorts of tactics, Abby finally said she was afraid of dark. Don't know why all of a sudden she is scared of sleeping in the dark. But that seems to be the case, after putting a night light in her room, she went to sleep.
These nights, she still wakes up once to go pee-pee, but would return to bed until 7AM. Hope she is getting enough sleep that she needs.