Board Thread:WARNING - SPOILERS and FALSE INFO AHEAD/@comment-10537454-20130713222133/@comment-11473789-20130714012729

I'd say she's most likely NOT the Darach but hey, anything is possible, right?

Your question however, cannot be answered since it wasn't explained. You know what everyone else on here knows.

If you're looking for theories or predictions, mine is that she is Boyd's older sister whom is dead. I think when he was younger they went ice skating together and he turned away for a bit and when he turned back, she was gone. Maybe she fell through the ice since he was hallucinating of her in the freezer which was full of ice? I'm guessing this because he heard on the radio what sounded like a little boy (Boyd when he was younger) being questioned. The little boy says something along the lines of "When I turned back, she was gone!" It would also explain why he tried to kill himself because he felt guilty for Alisha's death.