You do not need revenge when distance already removed their influence.

Revenge is a way of staying connected to someone, since planning it requires keeping them central in your thinking. Distance accomplishes what revenge only imagines: they stop affecting you. Once that is true, the desire to even things usually fades on its own, which is a sign it was doing something else.

If you are still turning over ways to make someone understand what they did, notice how much room that occupies. Put the energy into the part of your life they are not in. That is where the actual relief is.