Melatonin usually has no side effects at the correct dosage of 1mg. Was she taking the 10mg costco tablets?
It is like the feeling late after an LSD trip maybe 10-12 hours or more after the "usual dose" which would be 80 to 320 mcg.
Sensorium is lit up like a light psychedelic experience, might be weary but complete unable to shut down. In my image of myself in my mind's eye I am glowing with corona discharge.