[She thinks it's a futile effort and that Ezra is just wasting his time. Luke may have claimed to bring Anakin back to the light, but as far as Leia cares, it didn't do much of anything. He only turned to the light for Luke, and that light was nowhere to be found when she needed it. Her own irritation with Ezra's choices comes through loud and clear, even if she may not want it to.]

Even if it were possible, stopping or delaying his turn in his time will do nothing for our time. No matter how good he may pretend to be here, and no matter how determined you and any other Jedi are to prevent his turn, it won't change what we've already experienced. It won't save Alderaan. As far as I care, Anakin Skywalker is a lost cause.