nah, best revenge is to pretend like you don't know she exists, but flex hard on insta and make sure to leave it on public, she will look, and she will see not one mention of her existence. She was a footnote on page 23 of the most boring chapter of your book. Your new girl is hotter and smarter than her, no to mention a much better person and you both make 6 figures. She makes 15$ an hour working multiple part time jobs to pay off her 65,000$ loans for art school.
No one will know her name, you have already forgotten her, and she will die alone, penniless. Not with no friends, no. worse, she has shit friends because she made bad choices and she knows her one chance at happiness was you and she fucked it up.
No lie, I'm about 5 years into this story, and I'm real close to pulling it off.