He had assumed that things would be normal with Dr. Santino, but in reality, he hadn't worked with her much after she got back together with Donnally. Donnally in particular was getting on his nerves - he was just so smug all the time - but he wasn't exactly seeking out Dr. Santino, either, since she had it bad for Mr. Good Guy, either, and he suspected it was clouding her judgment. He hadn't had to go to her at home since the night TK was shot - there had been some times when he had considered it, but he assumed that Donnally was there, and he didn't want Donnally to get involved in some of the situations he was dealing with.
He was intrigued when she finally contacted him about a client. He was a little testy with her, but she ignored his irritation. Her request - that she do a full background check on Damon Razor - wasn't out of line, but even though he knew better, he couldn't resist asking her whether she had professional interest in this or if it was because Donnally's career was on the line since Razor was his pick. Even as he said it, he felt foolish, especially the way he said, "your boyfriend" with a slight sneer. What was he doing? Fortunately, she didn't acknowledge the aspersions he was casting on her professionalism. Instead, she pointed out that everyone was feeling the stress around Marshall.
He didn't realize until after she left that she had gotten him to reveal that he was feeling the pressure, too, and that she had managed to cheer him up by providing her Shark Week-garnered advice about bopping sharks in the nose (complete with hand gestures, too). He didn't know whether to be impressed about how well she handled him, or impressed by how ridiculously cute she was throwing imaginary punches at sharks. He settled for the latter. He already knew she was great at people-fixing, and he had really missed the way she could make him laugh.