While I will be the first to admit that we are certainly darker than most I honestly see Ciaran as being in the middle.
...Honestly, while we have the title, in terms of how Ciaran actually
acts and
feels I can see her representing the Light Side better than Anakin or even Obi Wan. Remember, beneath all the bullshit the light side is about 'calmness, gathering knowledge, and defense'. Using the force to gather knowledge and prevent the need for fighting whilst maintaining overall emotional detachment is pretty much the Light side ideal.
The dark side is about fear, anger, hatred, and aggression. That... Really doesn't suit Ciaran. At all. Honestly, I'd believe Obi Wan is driven by fear and anger more than Ciaran. He certainly deals with a lot more direct fighting, and despite his adherence to the tenets of the Jedi it seems clear even if he doesn't act on his distaste for a lot of criminal practices he despises them. Anakin, of course, is even more driven by emotion.
...Mind you, that would be hilarious.
Father: "You are both here to represent a certain point of view. Jedi Knight Anakin Skywalker, representing the Dark Side of the Force. And Darth Traya, representing the Light Side of the Force."
Everyone else: "...What?"