The prosecution tried to establish Friday that Crawley had time to commit the murder, while defense attorneys made it clear she was afraid of the victim's fiancé.
Crawley's former supervisor recalled on the stand how Crawley arrived at work three hours late the day Smith was shot to death.
Crawley, a former Greensboro 911 dispatcher, was soon after determined to be the primary suspect.
She turned to her supervisors for help, blaming the victim's fiancé Jermeir Stroud - a Greensboro police officer.
Stroud has admitted to dating both women at the same time, saying he ended his relationship with Crawley after a terminated pregnancy.
It was a rocky relationship Crawley's former co-worker said she often talked about.
On the stand, he told the jury how he sold Crawley a gun to ease her fears over Stroud or another intruder breaking into her home.
"My encouragement for her to get a gun was not for this specific issue, but she'd been broken into several times at her home that was my encouragement for her," witness Ronald Simpson said.
Simpson also said he taught Crawley how to use the gun, but the defense insisted she was afraid of weapons.
Testimony in the case will continue on Monday.