Saturday should have been a joyous day for Angel and Barbara Munoz.

One of their six daughters was to be married, with Amy, the youngest, the proud maid of honor.

But en route to the rehearsal dinner Friday, the 16-year-old Rapid City girl lost control of her car on S.D. Highway 44 near Johnson Siding about two miles west of Hisega, rolled down an embankment and landed upside down in an icy Rapid Creek. She died at the scene.

"She was to be the maid of honor today in the wedding. She was so proud of that. She had written her maid of honor speech, and she told me that she didn't want me to read it yet," said her sister, Wendy Honeycutt of Overland Park, Kan. "She wanted it to be perfect."

The accident happened about 5 p.m. Friday, but Pennington County sheriff's deputies said the car wasn't found until 7:30 p.m., when one of Amy's sisters noticed a damaged guardrail on the road.

"With it being dark and the location, it wasn't discovered until one of her sisters went out looking for her," Deputy Jason Mitzel said Saturday.

South Dakota Highway Patrol investigators believe Munoz's eastbound Dodge Neon drifted off the road into the guardrail. The car bounced off the rail, crossed the oncoming lane of traffic and went into the north ditch. The car then rolled off a culvert embankment, landing on its top and crashing through ice into 3 to 4 feet of water in Rapid Creek.

Pennington County Search and Rescue and the Rapid City-Pennington County Dive Team extracted Munoz from the car.

Mitzel said when sheriff's deputies responded to the call, the road was wet and slick, but alcohol and icy roads were not believed to be factors in the accident, according to the Highway Patrol, and they believe Munoz just drifted off the road and overcorrected.

A junior at Stevens High School, Amy loved spending time with her family, playing cards, fashion, shopping and talking with her friends, Honeycutt said.

"She was very bubbly, and she smiled all the time. She had a great sense of humor. She was always telling jokes," Honeycutt said.

"Everyone that knew her just loved spending time with her, because she was so funny.

"She would have done anything for anybody," Honeycutt said. "She was a great friend."

Visitation for Amy will be from 5 p.m. to 7 p.m. Monday at Blessed Sacrament Church, with a Christian wake service at 7 p.m. Services will be at 10 a.m. Tuesday at the church.