Loki walked over to her "Riza... what happened. Is my brother and Tony ok?" He didn't know what was going on. If he found his brother was in trouble, he would be out of the house very quickly. He wouldn't care if he wasn't safe. Thor was important to him. There was a desperate yet firm look in his eyes. He knew something was going on. He didn't care if anybody tried to stop him.
He wondered what it was that Nick had been talking about. He was nervous.
What could be going on. 
He was not going to tolerate anybody hurting his brother.