Because right there, over the keyboard was her. She didn't look much different than Hel did now, with the exception of a badly puckered scar that ran from her scalp down to her jaw. Behind her was a world map, little blinking red lights marked over cities and as she watches, the lights went off one by one, the one in Gotham already extinguished.
And she was holding a crossbow -- her crossbow at Kara, but not at Helena.
"Who are you?" The not-Hel demanded of Kara, not of her. The first bolt flew out of the crossbow to embed itself deeply in the wall. "Are you one of his? I will bury you here if you take another step."
"Hey!" Hels started, wondering just what the hell was going on in this place that she was shooting at her bestie and stepped forward, but the her, the other her, the not-her didn't seem to hear her at all.