A Sign from Above (Looking for Nancy)

My father just got back from Spain and sent me an e-mail that ended:

"finally, big news for you. on the flight from barcelona i sat next to a woman--in her sixties-- who was reading a star trek novel. the topic of conversation turned to future trips, and she told me that she is going to the star trek convention in las vegas in august!! i understand that someone else will be there!! [Sister had told him.]
"the woman's name is nancy and she is from harlingen texas. little bitty woman. it will be your quest to search for her!!"

I had already decided to go to Las Vegas to the Star Trek convention (weeping when I thought about it decided me), but this confirms it!
Now I even have a quest!