I've always been amused by Rand's look when Kirk tells her it's not her fault. I've always interpreted it as a private "you're damn right it wasn't my fault and I don't need you patronizing me either".
Another thing, when McCoy beams up he asks permission to come on board. A female voice says "Granted". Was that supposed to be Rand's voice? It almost sounds like an automatic response.
Finally, I would have also loved to see McCoy acknowledge that Rand is in the transporter room instead of just waking about complaining about engineers. He probably hasn't seen her in years!