ABC News' Diane Sawyer interviewed Giffords and Mark Kelly for a special to air Monday night. It includes video footage of the Arizona Democrat through various stages of her recovery after being shot in the head from close range at a constituent event in Tucson.
PHOTOS: Gabrielle Giffords shooting in Arizona
"Pretty good," Giffords says when asked how she feels.
"Is it painful?" Sawyer asks.
The nation has seen only occasional glimpses of Giffords during the course of her recovery. Most prominently, she came to Washington in August to vote on the deal that resolved the debt-ceiling crisis, a visit kept secret until she arrived in Congress for an emotional return.
She made a second trip in October for a ceremony marking the official retirement of her husband, a Navy captain and shuttle astronaut.
The ABC special is airing on the eve of the release of the couple's book documenting her recovery. Kelly writes about Giffords' anguish as she comes to understand what happened to her and other victims, including the six who were killed.
The closing chapter was the work of Giffords, who writes: "I will get stronger. I will return."