That’s only when they realized there might be a second victim.
She was also reportedly seen bleaching the inside of her car.
Flecher was found dead from a gunshot wound inside his home with the backdoor glass shattered after police did a welfare check on him following their conversation with Avalon.
"Witnesses reported seeing Avalon and her vehicle in a driveway near the home around the time of the shooting," the Hillsborough County State Attorney's Office said in a release. "Investigators have also found several pieces of evidence they say connect her to the murder."
Prosecutors believe Avalon killed Flecher first, then Scott next just hours later, according to the Tampa Bay Times.
Her current boyfriend, identified as Jeffrey Wescoat, told police in an arrest affidavit that Avalon had been sending him "unusual" texts during the day and had called to tell him, "in case anything happened to her, she loved him," the Times reported.
He also heard her say "f--k David and f--k Tim" when she got home before taking a shower with her clothes on.
"While our case focuses on one victim here in Hillsborough County, we know this tragedy did not end with one life," State Attorney Suzy Lopez said in a statement. "Two families are grieving, and we are committed to seeking justice while standing with everyone impacted by this senseless violence."
The state’s attorney’s office added that they are seeking the death penalty because of Avalon’s "cold, calculated and premeditated" crimes that were "especially heinous, atrocious" and "cruel, that it occurred during the commission of a burglary and that the defendant was involved in a contemporaneous violent felony."
Avalon was charged with first-degree murder in Flecher’s death and second-degree murder in Scott’s death.
Avalon, who remains in custody in Hillsborough County without bail, is expected to next be in court in July.