When Captain Pike's death was announced on the news that night, Uhura had cried. He was her first Captain and also one of her lecturers. Most importantly, he was Spock's mentor. Spock had been very quiet that night when she had shown up at his quarters despite their fight. But Spock had asked to be left alone to meditate and she had left. The next morning, they were leaving on an emergency mission and she met the Captain on her way to the Bridge.
Kirk was upset as was still evident on his face. She inquired after him and was met with bullheaded answers. He was clearly more agitated than he was letting on.
Then, when the turbolift closed, he complained about Spock. Any other day, she would have defended Spock. But, she knew Kirk had become very close to Spock in the past year and there was no point defending Spock from his own friend. It wasn't Kirk's fault that Spock didn't understand human emotions. So she sided with Kirk for once and he got on quickly to the fact that there was a rift between them. Uhura would rather drop the subject, because she was not sure she could control her anger if she talked about it, when the doors opened to reveal Spock, looking between them with a question in his eyes.
Uhura was pissed and stalked off when she heard Kirk chime in "Ears burning?"
She had to stifle a laugh at that. It was quite funny when though he was Spock's closest friend, Kirk always sided with Uhura when it came to anything between Spock and her.