Sounds like a non-smoking Captain who probably wasn't impressed with a crew member wanting to do a ciggie run over to the terminal to me. I bet they left her behind on purpose!
We used to have the same thing threatened to us at AMM, even though we were usually getting the flight deck orders too! I found it always help to get the dispatcher to take you in their car, much quicker than the pax bus. Its not nice thing to do is it.
TDB x