I know powerless rage is the worst, and that's totally the emotion I would have in this circumstance, too. I raged for months after my exT totally blew off my complaints about her (much less severe) ethical failures. All I can tell you is I finally realized I would have to get past the rage or it would kill ME instead of her. I realized that she had issues that caused her to act that way which had NOTHING to do with me, and that those issues were going to keep affecting her in all areas of her life. But I could learn from her mistakes and go on with my life. All that energy of rage is telling you something important about what you value. I think it's important to listen to what that is, whether it's how much you care about honesty, protecting vulnerable people in general, or how much you value your own worth and happiness. I hope you can find a place to pour those energies into where you WILL get a result you want and won't be helpless.