Brother Blood has brainwashed Raven into thinking he's great and no one can snap her out of it. Except Jason when he shows her what BB did to her mother.
There's a lot of things I love about this simple moment. Jason is the one that decides to stay behind away from the fighting to look after Ravens' mom. Since we know what happens with his own mother it's heartbreaking. But what's really frustrating is that Geoff Johns later retcons the way things were. Saying that Raven warned Jason about his anger when he was one of the few that had it together during his Titan days. She owes him not the other way around!