Thanks for sharing Wallaby.
Loosie, that is one of the many reasons I love my vet! He knows I know my horses. When T was alive (she developed a very aggressive ERU) and I called Scott and told him that she just "looked off", he knew something was up. Many times I caught an episode before the physical signs displayed because of that "off" look.
When you are with your horse/s 24/7 you develop a keen ability to see when they are not themselves, even if it is extremely subtle.
Be the kind of woman that when your feet hit the floor each morning the devil says, "Oh crap, she's up!".