Rep. Gabrielle Giffords, who was shot in the head by a gunman in January, said Monday she will not return to Congress until she is "better."

In an interview on ABC's "20/20" program, Giffords struggled to form sentences throughout the interview and replied, "No. ... Better" when asked if she wanted to return to Congress.

She moved her hands in front of her mouth as if needing to form the words and said, "Better, better." Her husband, former astronaut Mark Kelly, completed the thought for her, saying, "She wants to get better."

There's been wide speculation about Giffords' career plans, including whether she would run for Arizona's open Senate seat.