How does she know?

How does Camryn know when I'm in the kitchen?  Scenario:  Camryn is napping with her butt towards the house.  House is over 1/2 acre away from her paddock.  I enter kitchen, and stand at sink.  Camryn automatically turns, looks up to the house and heads for the gate.  Then stands waiting!!!  I can see how she'd see me in the evening when the house lights are on.  But, in broad daylight!!!  Just amazes me
Been lacking in posting due holiday stuff, hopefully I'll be back on track soon...