Washington, DC (Channel 6 News) — Rep. Gabrielle Giffords (D-Ariz.), who was severely wounded just over one year ago in a shooting rampage, announced Sunday that she is resigning from Congress.

“I have more work to do on my recovery so to do what is best for Arizona, I will step down this week,” she told supporters in a video message. “I’m getting better, every day.”

Giffords says she will resign this week from Congress so that she can devote herself to her rehabilitation, which has been under way for more than a year since a bullet pierced her brain during the mass shooting in a Tucson parking lot that left six people dead.

The Giffords shooting — and her remarkable recovery — shocked and captivated the nation in January of last year, and her long road of rehabilitation has often played out in public. In her video, Giffords speaks clearly but deliberately — her speech functions have slowly returned during her year-long recovery.

“Arizona is my home. Always will be,” Giffords says. “A lot has happened over the past year. We cannot change that. but I know on the issues, we fought for, we can change things for the better. Jobs. Border security. Veterans. We can do so much more by working together.”

She also addresses the shooting in her statement.

“I don’t remember much from that horrible day but I will never forget the trust you placed in me to be your voice,” Giffords said. “Thank you for your prayers and for giving me time to recover. I have more work to do on my recovery so to do what is best for Arizona, I will step down this week. I?m getting better, every day. My spirit is high. I will return and we will work together for Arizona and this great country.”