Thor let Loki pull away from the embrace, knowing that Loki had allowed it to go on for more than he usually would have anyway. He also didn't saw anything when Loki threw one of his throw pillows at the guard. Afraid that the guard would have taken the tantrum as an actual threat, Thor nodded his way and waved after him, requesting that he close the doors. The guard obliged, knowing that Loki's suffering was not a spectacle to be seen by all of Asgard. 

"Yes, brother." Thor agreed. "We all make mistakes." He quickly followed up. "We feel things we shouldn't or don't deserve and it's out of our control." Thor almost smiled at himself, since when had he become the calm and collected brother who spoke of philosophy. "But mother's death was not your mistake, and it will never be. Your imprisonment was my mistake...for not being able to help you. Please, brother, I wish you would see that."