What exactly do you want to accomplish?
If you dream of a scenario where she realizes the error of her ways, repents, apologizes, and admits that you were right and are better than her, guess what? IT WILL NEVER HAPPEN. She is, at best, a narcissist, and she is incapable of shame or remorse. She will always live under the delusion that she is, and was, better than you, because without that delusion, she would have to face the crushing reality that she is just not that important at the end of the day.
If you merely want to psychologically torture her, why play your hand and threaten her with supposedly incriminating information? 9 times out of 10, threats are bluffs - the mere act of making the threat is an admission that you cannot follow through. It's like yelling at a bully that you will destroy the bully and their entire family - it will never happen, and the attempt to intimidate often backfires.
I know this doesn't satisfy your insecure need for instant revenge, but the best thing you can do is play the long-con. If you are truly as revered in your industry as you believe, I guarantee that you will cross paths with her one day. I also guarantee that she will act like you two were fast friends, and may even claim that your success is attributable to her. This is often followed up by a request for a favor. It is this request that gives you the ultimate opportunity to get your revenge.
Or, if you ever cross paths with her, simply tell her two things. One, she is just not that important. Two, you have what she will never have - happiness. She may laugh it off, but I guarantee that these statements will bother her because they are true.