Her stating she has to jet makes him frown. That could mean a lot of things, several bad. But she didn't flat out say that something is wrong, just that she has to leave. She could just be getting called to a medical situation.

Shark tells himself to not worry about it.

aight. keep cool. good luck out there.

She won't likely see that until later so he doesn't wait or expect a response. Instead, Shark decides it's time for a smoke break and gets up from behind his desk and heads for the door.

Don't worry about it.