Not trying to beat down the view on the relationship of the two.. But my TB Romeo follows me in pasture, in the ring with other horses, anywhere I ask. If I point and say "go" he will walk to where I pointed and wait there. He hugs me when I am sad, he licks my cheek when I cry (only twice have I cried and both times he's licked me), and he nickers to me when he hears me pull up to the barn. Im just saying, anyone can have an unbreakable relationship. But I do see hers was probably built on food... (the hand sniffing each time)
Horses are angels without wings!