"Yeah, you have games to play and I had work to get done."
She didn't really mean it... but she did. But didn't. It was this urge she couldn't repress to snark at him and tease him. When it came down to it, she trusted him with her life and knew they had each other's backs. But she couldn't stop this other sort of behavior from spilling out the rest of the time and didn't know why.