My daughter has never had trouble sleeping, she falls asleep at 7:30 P…

My daughter has never had trouble sleeping, she falls asleep at 7:30 PM - 8:00 PM and wakes up at 8:00 AM. During the day, she naps from 12:30 PM to 1:30 PM every day, but for the last two days, she's been having problems with daytime sleep. She wants to sleep but can't fall asleep, her chest feels heavy, then she gets out of bed and starts running around the room, and ends up falling asleep closer to 3:00 PM. Naturally, she goes to bed later in the evening, closer to 9:30 PM. Has anyone experienced this? ??‍♀️