"I was unaware of everything," she told the New York Times. "I don't condone what he has done. I am very sorry for what has happened. He has hurt a lot of people."
Salman painted a portrait of Mateen as someone who easily became angry, beat her often, and lived his life in secret.
She said she has moved three times since the attack, hoping to avoid the media, and asked that her location not be disclosed.
The newspaper says prosecutors are still weighing charges that could include lying to the FBI.
On her reason for speaking out she said: "I just want people to know that I am human. I am a mother".
- Herald Online