WeeJohn....!
My pleasure!
Please be advised that we have more than 40 ladies with a valid Ground rating plus quite a few on training. It will thus be hard to identify "the lady on ground".
There can be a number of reasons to say "standby" - sometimes the controller just needs to think. If it happens all the time it could be that she "needs a little more experience". Some of them are very green and you are a lot more likely to get a "standby" with no explanation given from somebody on training.
I think a lot of pilots would benefit significantly from sitting next to a controller during a busy spell - Tower, Approach or Area Radar. This is the only way that you guys will get to appreciate what we are doing and why we are doing it - maybe! A bunch of pilots herded through the ATCX by a CAD official is a complete waste of time. Come closer, plug in and have a casual chat to the controllers if you can!