Of course, Rook was going to follow Ash and make sure he got home safely. After what had happened with the Anarchs he couldn't do otherwise even if he knew that the Toreador could more than handle himself. There was still always the possibility that something else could happen or he'd meet someone that he couldn't influence with his Presence.
He couldn't do so as a man, however. That would be too much on both of them. If he did he might be tempted to catch up to Ash or for Ash to turn around and wait for him. It was too much temptation right now. Instead, it was the raven that followed Ash home. The raven that sat in a tree and watched to make sure that he got inside okay. The raven who stayed there in that tree a little longer and kept an eye out before finally leaving so that he could return home as well where'd spend the rest of the night dwelling on what had just happened.