What goes around comes around, the saying goes, and sometimes what goes around comes right back to the person that sent it around in the first place. That's the way it works between Marie Alexander and her Chihuahua, Sassy.

The 92-year-old Florida woman twisted her ankle and took a fall on the walkway to her house last August 13, after retrieving her mail. She was unable to get up, and, without a cell phone, could not call for help. She lay there in the baking sun, knowing that her son and daughter-in-law, who live on the property, were not expected back until after dark.

Alexander was also aware that she was barely visible from the street, thanks to the bushes surrounding her home. "I just said prayers," Alexander said.

That's where Sassy took over.

"She ran down every car that passed," Alexander told ABC Action News. After the each car disappeared down the street, the 9-year-old Chihuahua would return to Alexander. "Sassy came up and laid beside me each time and licked my face," she said.

Finally, after five hours, Sassy managed to get the attention of a couple walking by the house. They spotted Alexander's body lying in partial shade that she had managed to crawl into before collapsing... onto an ant hill.

Alexander spent a brief period in the hospital recovering from ant bites, bruised ribs and ankle, and severe dehydration. Sassy waited not-so-patiently for her at home -- family members told ABC Action News that the Chihuahua barked the entire time Alexander was away, unusual behavior from the normally quiet dog that Alexander rescued from an animal shelter in 2010.

"I saved her at the shelter and she saved me," Alexander said.