Someone experiencing what they put you through and have their life changed the way their actions changed yours is the best form of Karma. It doesn't matter how long it has been since you did what you Karma will still get you.
No one has escaped Karma. She meets you on the same road that you take to avoid her. When you meet her, she reminds you of her two simplest rules: What you sow is what you reap. Everything in life is connected.