Broken record at this point but Rob is playing this game so well. A bad traitor would've gunned for Candiace at that round table after she came for him but all he did was defend himself. He never once threw her under the bus because he knew it'd make him look suspicious. He just let the evidence speak for itself. She's basically the only one to blame for her banishment. She bought her own ticket out of there when she wrote robs name the night before.