"Because I just guessed he text you because I didn't answer him properly." Sherlock was always able to work things out. He knew that he wouldn't get infomation out of her like that if she didn't want to tell him. He could always try though. But he was probably likely to annoy her anyway.
He walked by her. The detective knew that everybody mostly couldn't really stand him.

"Painkillers? I don't need them, plus I'm on the case. I need a clear head." He didn't even want to get sleepy, or unfocused. He closed his eyes and tried to ingore the pain again. He kept walking by her till they got to the cafe.
"Sugar." he said. He didn't want milk in his tea. At least not this time.
The detective was looking at her, he saw her order a sandwhich. He wasn't ordering any food.

Even as his stomach growled when he saw the sandwhich . He was looking at her . He yawned a bit. "I don't know how you can eat when there is a case." he didn't seem to act like a normal human. It was almost if he forgot thet he was sometimes.
He didn't see that skipping meals was a bad thing, no matter how much John told him off.