RIP Milly, and when Cairo goes to heaven she can have a huge friend who will be her partner in crime - she sounds like a mini version of our clydesdale.
Picture a little pony and big horse together stealing all the sweeties and sarnies - it might make you smile.
She was an exceptional pony, so like my little Jackoby who was PTS in November. I was heartbroken but at that age she owed me nothing and I owed her her dignity