((Sorry this took so long, away for the weekend...))
Grissom held up a finger as Nick pleaded to talk, watching Olivia to make sure she wasn't going to start crying again. Catherine came in, and he looked at her as if trying to say 'Get out, I'm busy.' when she came over and stood in front of them. "Hi, i'm Catherine - do you mind if i talk to you too?" Olivia nodded and moved over as Catherine gently fired questions to her about the playground homicide him and Sara did a few months ago. The whole scene jumped to life again in his eyes as she described how she saw him and Sara coming up the sidewalk, how he caught Sara when she was knocked over, and how they tried hard as they could to catch the man fleeing to no avail. A minute later, Catherine left and watched Olivia silently for a minute. Realizing that Nick wanted to talk to Grissom so importantly, he turned to Olivia and smiled.
"Umm, Olivia, do you mind if I make a call real fast to Nick? He needed to talk to me about something and I won't leave, I'll stay right here." On cue, he took his cell phone from his pocket and showed her as he opened it, ready to dial Nick's cell.