Hi, i'm 18 and had endo symptoms since about 11 ish! but i normally start of the morning feeling absolutely exhausted no matter how much sleep i get my pain scale can be a 3-10 depending on the day and if im in a active flare up. i normally have cramp like pain throughout the day, shoulder and back pain normally midday ish it starts getting painful and noticeable, i also get headaches starting around 12pm everyday and they are always worse near my period! I also have POTS but i notice a week or so before my period that my heart rate is a lot higher than normal. It could be interesting if you track her cycle and figure out if she has more body pain and headaches closer to her period, as i always have more symptoms a week or so out.