You have been wronged by someone close to you. Nothing egregious, but you bare scars and resentment. You are too well mannered to address your greivances, and likely consider direct confrontation, poor taste, and not likely to be accepted by your peers. You think it would be seen as petty of you.

Your preferred option is to have someone else who was a witness to your wronging, to stand up for you as a disinterested 3rd party, the opening up the door for redress and justice while maintaining your composure. The problem is, no one is standing up for you and you know it. You now understand that your preferred path only leads to nowhere.

You have a choice to make. Wear your scars in disgrace. Confront your agressor in what will be a pyrrhic victory at best, or seek a third option - anonymous petty revenge. Perhaps a campaign of malicious compliance, I can't tell more specifics because you haven't fully considered all your options.