Mark laughed softly with her, and then got back to his typing as she went to sort them out with coffee. The clink of the mug against the desk prompted him to say an automatic 'thank you' without even looking at first.
Then she mentioned her husband, and he stopped for a second to glance over at her. "Oh. I'm sorry to hear that," he said with some sincerity. "Nothing too serious, I hope?" he asked, picking up the mug and taking a sip.