The group of girls, who had been beating her, followed and took her backpack away from her, dumping its contents into the water and street.
They dumped its contents into the water and street. The group of girls, who were beating her, took her backpack away from her.
The group of girls, who were beating her, took her backpack away from her. They dumped its contents into the water and street.
The group of girls, who were beating her, took her backpack away from her. They dumped its contents into the water and street.