From another post you wrote, you are likely a bit to experienced to use a revenge spell. I can understand the desire to want to jump into things and do things now, but the chances are, either the spell wouldnt work or you could get hurt by it.
Maybe you can look around and find some simple things to do while you build a foundation and understanding of magick.
Think about it... Is this really what you want to do? Do you really want to stoop down to her level? Do you really want to hurt another being? Are you willing to take the consequences for this, if any?
These are things you must think about before casting any spells with the intention of harming.
If your asking people for one rather then writing one yourself, I would say your probably not very experienced in magick. I am not trying to insult you, but like Scrupulous said, do you really want to do that? Even if the person really did you harm, it will still come back on you. If you do wish to go through with it, I would suggest you research hexes and curses.