Monique Reed, 38, of Washington, was arrested Thursday and charged with shooting Lauren Newton in the small of her back, near the buttocks.
Newton, 28, was getting a haircut at Reed's house when an argument erupted about the style, said police Chief James Blyth.
"She (Reed) went to the bedroom, got a gun, fired a shot in the ceiling," Blyth said. Reed then shot Newton, who was trying to flee with her sister, Blyth said.
Newton was being treated in a Pittsburgh hospital and her injuries were not considered life-threatening, police said.
Reed was charged with aggravated assault and reckless endangerment. She was arraigned late Thursday and sent to the county jail.
The district magistrate's office said Reed had not listed an attorney as of late Thursday. It was not immediately clear if she had posted the $50,000 bond.
