A white woman in Florida who shot a Black neighbor who confronted her at the door of her home last year in a case that prompted national outrage was found guilty of manslaughter on Friday by a jury in Marion County, Fla.

Susan Lorincz, now 60, shot Ajike (A.J.) Owens last June as the 35-year-old mother of four stood outside a door to Ms. Lorincz’s home in Ocala, a city about 80 miles northwest of Orlando.

The two neighbors had been involved in an ongoing dispute over neighborhood children — including Ms. Owens’s — playing near Ms. Lorincz’s house, the authorities said.

After Ms. Lorincz argued with the children and threw things at them, Ms. Owens went to Ms. Lorincz’s door to confront her, the police said. Ms. Lorincz fired a handgun through the door, striking Ms. Owens in the chest. She was not armed.

Ms. Lorincz, whose lawyers argued that she had acted in self-defense, faces up to 30 years in prison. The panel of six jurors, who The Associated Press reported were all white, delivered its verdict after deliberating for just over two hours after closing arguments on Friday. The trial began on Tuesday.

The case has garnered national attention for the delay in the arrest of Ms. Lorincz, because of the Florida’s “stand your ground” law, and the fact that prosecutors ultimately decided to charge her with manslaughter, not second-degree murder.