The mother of a 9-year-old girl gunned down in Saturday’s shooting rampage outside an Arizona grocery store described her grief as “beyond words,” saying her daughter was a beautiful and intelligent child who was interested in government.

Christina-Taylor Green had just been elected to the student council at her elementary school and went to the "Congress on Your Corner" event outside a Tucson Safeway on Saturday to meet Rep. Gabrielle Giffords, D-Ariz.

Christina, who was born on Sept. 11, 2001, is the granddaughter of Dallas Green, former manager of the Philadelphia Phillies. The girl’s father, John Green, is East Coast Supervisor of amateur scouts for the Los Angeles Dodgers.

The third-grader -- along with five others -- was killed in a spray of bullets during the meet-and-greet.

Giffords, who was shot in the head, survived the attack, but Christina died in the massacre.

"She was a beautiful girl, inside and out," Roxanna Green, the girl’s mother, said in an interview Sunday with Fox News.

"I just can't even put it into words,” Green said, her voice trembling. “I can't express the devastation and hurt and how we were so robbed of our beautiful princess.”

Green said her daughter was very interested in public service and that Saturday’s event was "going to be a learning experience." Christina had been invited to the event by a neighbor, who was shot four times in the rampage and is expected to survive.

Green said she received a phone call from a friend’s husband, saying Christina had been transported to University Medical Center in Tucson along with the neighbor. 

Green said she thought that the child might have been involved in a car accident. But upon arriving at the hospital, doctors and law enforcement said the girl had died from a "bullet hole to the chest."

"They tried to save her but she just couldn’t make it," Green said.

Roxanna Green told Fox News that Christina was the only girl on her Little League baseball team, The Pirates. She loved dancing and animals, she said.

"The Phillies organization expresses our heartfelt condolences to Dallas and Sylvia and the entire Green family on the senseless, tragic loss of Christina's life," Philadelphia Phillies team president David Montgomery said in a statement Sunday.

"She was a talented young girl with a bright promising future. Her untimely death weighs heavily on our hearts. Our thoughts and prayers are with all the families affected by yesterday's horrific shooting," Montgomery said.

The Associated Press contributed to this report