Blair Netzley had seen a lot in her 613 years of life. She came to the New World and helped colonize Massachusetts. She was a survivor of the Salem Witch Trials. She had traveled west secretly following some miners seeking gold and was one of the first settlers in northern California along with her younger sister Philomena.
She knew of every single fae within a thousand miles of her home base. Her network was large and gossip traveled quickly.
It allowed her to stay on top of any new developments and also helped combat her boredom. The only thing that kept her from going insane after all this time was trying to develop new spells to keep up with the ever-changing human world.
So when a vampire from a coven that a reliable source told her was completely wiped out showed up in her store, Blair was more than a little shocked. The Mayhews' castle had been decimated and dozens of vampires were killed.