You won your confrontation so find a way to let the other party save face. You don’t want to plant the seeds for future resentment.
You’re in a tricky position where you must be pointed but not pushy. Outline what you want and let people make up their minds.
A “show me” attitude is understandable. You’ve been misled before. Yet you could scare off someone who’s as sincere as s/he is squeamish.
A criticism stings. You don’t mind that it’s true; what hurts is the manner of delivery. Absorb what’s said and move on from there.
You’re getting close to the tipping point. Colleagues encourage you to proceed, but things could reverse themselves. Slow down and assess.
In order to move ahead with one enterprise, you must cut ties with another. It’s easier than you think. Blame it on your hectic schedule.