From her angle, she'd only really see Donald bobbing in the water, conversing with someone standing at the edge of the pool, just blocked by the window. The words would be hard to make out, but the voice was unmistakable.

Eventually the figure walked off, and Daisy would be able to catch Scrooge McDuck walking back to the mansion as Donald swam around. A moment or two later, the door burst open, and Donald stood there, breathing heavy as water dripped from his soaked form to the floor.