How do you show gratefulness to someone that has hurt you ?

Reflect on what have you learned from this experience, how are you a better person now because of that. Really try. Extract something (anything) positive from it. Now, how can you not be gratefull to this person?

Thank you for the consideration you gave me in this hour of mine. I know your time is valuable and thus I do appreciate your thinking of me in such a kind way.
Be Blessed and Have A Great Day.