He stood up at her arrival, then glared as she walked past him. He followed her, grabbing her arm and turning her around. He knew she was stronger than him, which is the only reason he even laid a hand to her to begin with. He wouldn't have been able to otherwise.
"Isobel, we need to talk," he said, pulling the now pretty wrinkled and obviously very much poured over letter from his back pocket. "What's the meaning of this?" he asked, waving it in the air by her face.