HELLO! MY MOM HAS TYPE 2 DIABETES, LAST NIGHT SHE

HELLO! MY MOM HAS TYPE 2 DIABETES, LAST NIGHT SHE HAD THE CHILLS, SHE THOUGHT SHE WAS COMING DOWN WITH SOMETHING, THEN THIS MORNING SHE CHECKED HER SUGAR LEVEL AND FOUND THAT HER SUGAR WAS 454. HER HEAD FELT COOL TO THE TOUCH SO THE FEVER COULDNT HAVE BEEN THAT HIGH AND SHE JUST FEELS CRAPPY, CAN THIS BE HER BODY'S NORMAL REACTION TO THE SUGAR LEVEL?
THANK YOU!