Al.com reported that the family wasn't hurt as Johnson and her husband were at work and her grandson was at school during the blaze.
"My neighbors are just heartbroken, too", she said.
The women who accused former Republican Senate candidate Roy Moore of inappropriate behavior and sexual abuse faced serious backlash for their decisions to come forward, with their private lives aired out in public and threats of varying degrees leveled against them.
"I am devastated, just devastated", Johnson told AL.com on Friday morning. "But there have been no charges, to my knowledge, related to the fire at this time", said Natalie Barton, the public information officer with the department.
In an interview with NBC's Megyn Kelly in mid-November, Johnson said she was in her 20s and was signing custody of her son over to her mother when Moore touched her.
Johnson, who is presently staying in a motel, was told by a neighbor that the suspect in question made a comment wondering if the house was going to burn that morning.
The Etowah County Arson Task Force confirmed it is investigating the blaze in Gadsen and speaking to a person of interest.
Neighbors told AL.com that several of them noticed a young man walking around the house at about the time of the fire.
Tina Johnson said Moore grabbed her in his office in the early 1990s.
"I was so humiliated and sickened", she said.
Reuters was unable to independently verify the allegations, and Moore has denied any wrongdoing.
Moore's Democratic rival, Doug Jones, was sworn in Wednesday as the next senator of Alabama.