Grace Audrey McDonnell, 7

(AP) -- With broken hearts, the parents of Grace Audrey McDonnell said Sunday they couldn't believe the outpouring of support they've received since the little girl who was the center of their lives died in the Sandy Hook Elementary School shooting.

Lynn and Chris McDonnell called their 7-year-old daughter "the love and light" of their family in a statement released by the little girl's uncle.

The family also shared a photo featuring Grace smiling into the camera, her eyes shining and a pink bow adorning her long blonde hair.

"Words cannot adequately express our sense of loss," the McDonnells said.