Ana Marquez-Greene, 6

(AP) -- A year ago, 6-year-old Ana Marquez-Greene was reveling in holiday celebrations with her extended family on her first trip to Puerto Rico. This year will be heartbreakingly different.

The girl's grandmother, Elba Marquez, said the family moved to Connecticut just two months ago, drawn from Canada, in part, by Sandy Hook's sterling reputation. The grandmother's brother, Jorge Marquez, is mayor of a Puerto Rican town and said the child's 9-year-old brother also was at the school but escaped safely.

Elba Marquez had just visited the new home over Thanksgiving and is perplexed by what happened. "What happened does not match up with the place where they live," she said.

A video spreading across the Internet shows a confident Ana hitting every note as she sings "Come, Thou Almighty King." She flashes a big grin and waves to the camera when she's done.

Jorge Marquez confirmed the girl's father is saxophonist Jimmy Greene, who wrote on Facebook that he was trying to "work through this nightmare."

"As much as she's needed here and missed by her mother, brother and me, Ana beat us all to paradise," he wrote. "I love you sweetie girl."