Wow...scary:-) Seriously, what big trouble she can be in?

If the original poster described the whole thing as it was, I don't see how the hell the guy was being nice to her. If he had meant to help her, he would have been more specific rather than a snarky annoying comment.

Disclaimer: I could be wrong as I have never worked in a lab environment. I am just talking the common sense, and I believe it can be applied in any universe.