"As public as things get in this day and age, milady. Your computer, the box which your magic animated, connects to something called the Internet, a mode of communication divined by energy that passes through the air, and through specially made cording. People can talk across it, as we did, or send pictures, or even create small stable spaces, called web pages, to place pictures and words. The girl you replaced had several such, and had no hesitation to paint herself or her views on them."
He watched her with compassion, knowing it must be a shock.