Discipline means more than punishment for wrong doing.

For example, you can teach her the discipline of keeping her legs open. A tap to the thigh or knee if she falters.

Or discipline her to stand on her toes as if whe were wearing heels, and a smack to the ass when she drops.

Exercise regimens can be maintained with discipline.

Give those examples, I have no doubt there are dozens of non-punishment disciplines you can instill in an online only situation...

From the spanking/whipping perspective, that happens to be something I enjoy, so it is never used as a punishment. My girl gets her ass reddened often, and because we don't get together as much as we'd like, when we do, she gets hundreds of strokes... and amazes herself at how much she endures for my pleasure.

Speaking of which... we rendezvous again in three days.