Its just a stock image, I doubt the lady even knew she would be used in an Apple promotional image. You can find these kind of images from istock and the like.Karen Taylor? (obviously it's just a dummy name)
Just curious, thanks.
PS This reminds me of Ellen Feiss in the Apple 'Switch' ad campaign back in 2002
Bright colors, crisp lines, picture perfect. Quite the contrary to how FaceTime actually is.
As for the girl, she is certainly not ugly.