She was trained the old fashioned way and knew every trick there was - I was just getting started with this travel stuff and was broke. She didn't do it a lot (at least for me) and I suspect it was one of those "just don't do it all the time" things. She was also a master at pricing tickets through a sequence of adding and deleting segments to get the best fare before ticketing. Not throw away or nested stuff, she had a trick to add a segment in the middle and then cancel just that leg before ticketing and the ticket went through.

I can still hear her typing away a mile a minute while I was on the phone with her. Click, click, click, click, pause, "nope" click, click, click click, pause, "GOT IT!!"

She seemed to enjoy the hunt.