Salome is located next to your throne in the Throne Room of your Battle Tower.
Talk to her in Ego Draconis you might hear her say "I wonder who's head I can ask for?" This is a reference to the step-daughter of Herod Antipas, who danced so well that it pleased the King. This ended up with John-the-Baptist's "head on a platter".
A Biblical Easter Egg for those who notice her name.