She wrapped it tightly over her chest, still feeling the tension in the air even as he left. As angry as she was, she was concerned - this wasn't like her brother at all, and she wasn't sure what could possibly be so bad that he would get so defensive about the garage. Stiles was in the house, last time she checked, so it definitely wasn't that.
"What mistake?" She asked, frowning, taking a step towards him. "What could be so bad that you nearly attacked me just for going in there? There's a scent, it's not one of ours, I was trying to protect you."