These are the words spoken by the character in the promo video;
I was happy. Once upon a time, I had a husband, I had a daughter, I had a life. Then Miracle Day came along and nothing was the same again. That’s when I started to run, they all tried to stop me, the government, the CIA, the families.
But what they didn’t know is, I’ve got a secret of my own. Torchwood.
Source [Doctor Who News]