An unplanned trip to Taco Bell on the day of the Columbine shooting may have saved the life of Amanda Meyer, good friend of martyr Cassie Bernall.

On any other school day right after lunch, Amanda probably would have been sitting with Cassie in the school library, where most of the Columbine killings took place.

But not on April 20, 1999. Here's the amazing story:

Amanda had been waiting to meet some friends in the cafeteria. "But they never showed up, which was strange," she says.

A girl Amanda knew from work asked if she wanted to go out for lunch.

"She wasn't really even a friend," Amanda says, "I thought, I shouldn't go because I'm supposed to meet friends, but instead I said, 'Sure, why not?' Then I thought, I've got to be back in time to meet Cassie in the library to study, but I didn't even say anything."

I went to Taco Bell. "I spilled taco sauce on my white T-shirt," says Amanda. "I thought, No big deal. I'll just wear my coat and no one will see the stain. But what I said was, 'Could we stop at my house so I can get a clean shirt?'"

By the time they got back to school, the shooting was taking place. Students were running from the building. People were shouting and screaming. "Something was obviously wrong," says Amanda, "but I didn't know what."

That was the only day last year Amanda left school for lunch.

Amanda's mom believes God spared her life. Says Amanda, "I feel like all of this is preparation for something."