On paper, Maile Aguila’s story reads like a fairy-tale version of the American dream: After 30 years of hard work, a daughter of 1960s Cuban exiles sells $1 billion worth of Miami condos in a single year for a multi-national developer. Then she partners with The Agency, one of the buzziest luxury real estate brokerages in the country, to sell even more of them. She lives on a sprawling farm outside Miami with a menagerie of horses, dogs, cats, a koi pond and an aviary full of exotic birds.