I'm sorry to report that Venetia Phair died. She was the girl that named Planet X. Unfortunately Pluto is no longer a planet, but the story of its discovery by Percival Lowell is facinating.
By the way, Minerva, Zeus, Atlas, Persephone, and Onehtn were other candidates for the name. I like Pluto. In 2015 the New Horizons mission will finally reach it. Its a long way, and I bet it is cold out there.