Generally, I would be inclined to take the eyewitness testimony of a caregiver at face value. The stored 31 reading seems pretty conclusive to me! I have seen my 4 yr old daughter's bg plummet at an alarmingly fast rate, once even after a low treatment (although she's never passed out, and we've only ever had to do low-dose glucagon one time). It sounds like you have other issues with your nurse and school administration, but that she did the right thing here. We always carry glucagon, but this thread has been a good reminder to me to renew our RX, as we just passed another anniversary last month.