It's Now. She's Here. Thats all she's ever known.
She's never known if its a moment or an eternity before (after).
She never (always) will.
The endless (instant) is the same.
Everywhere is here, here is where she is.
But she wants to understand him, his then and his now. Past and future as separate and distinct.
So Bad Wolf twists the universe.
Creates a fixed point of reference.
Jack shows her the meaning of linear existence.
Pain.
Until Jack touches her again.
And she feels the truth
Guilt