While getting ready for school this morning, Rei abruptly stopped and began to wail. Her neck was hurting and she couldn't move without pain.
The medical clinic wasn't open when I called about getting an appointment. I did call the school to say that she'd be absent today. After some Tylenol and a bit of time had passed, Rei was feeling well enough that her tears had stopped.
Upon further investigation, her trouble doesn't seem to be medical in nature. Rather than waste time waiting for a doctor's attention, (and with little assurance that any course of action might be prescribed), I've booked an appointment with our chiropractor for this afternoon and we'll see what can be done there.