Suggest Treatment For Pain In Limbs And Headache

Ok, My wife in canada seems to have massive aching limbs and huge headache, also her eyes have a bit of an aching sensation.

She has a history of dehidration and large advil consumption. not sure if that should matter, but I can't do anything but her mother is there and taking orders. i already instructed her to get plently of liquids and get some ice on her forehead. also not to look at too many lights, and to lay in a dark room to get her to fall asleep and rest. Am I doing anything wrong and if so i need proper instructions.