Marilyn Oettinger can't stop thinking about it--and neither can her family. "There she was," says her daughter Margie, "confused, flabbergasted, embarrassed. And this guy rescued her."

She's talking about when her 89-year-old mom went on a grocery run with some other seniors to the Star Market in Auburndale--a rare unassisted trip since losing her husband in July. Things went fine until the checkout line, when Marilyn discovered her only credit card had been canceled two days earlier--because the account was in her late husband's name. "And this amazing person behind her said 'Don't worry. I'll take care of your groceries,'" Margie said.

The bill certainly wasn't meager--it was $109. Marilyn accepted his offer--believing she'd get the guy's contact info and pay him back later. Margie said, “She tried to get his name, but he said 'No. Just say a prayer for me.'" And then--with his good deed done--the fella vanished.

"That gives me the chills," said a woman wheeling a cart from the store. "That's an amazing story. Really cool." A man leaving the store agreed. "You know it makes me happy when someone who doesn't really want the credit gets it. They deserve it, right?"

Indeed, Marilyn’s family is pledging to pay it forward with similar kindness on future trips to the supermarket. But they also reached out on social media, trying to at least get the chance to say a proper "thank you." Margie says, "We're trying to find him. And even if he doesn't want to come forward, we're hoping that he'll know that we're incredibly grateful."

They've already said the prayer--several times. Margie said, “It's amazing to have an angel like that.”