A 21-year-old Mableton woman has been charged with aggravated battery after she stabbed a Cobb Community Transit bus driver who tried to break up a fight, authorities said.

Taniesha Nicole Twyne also was charged with theft by conversion in the Monday afternoon incident outside the Town Center at Cobb mall on Earnest Barrett Parkway in Kennesaw, Cobb County police said.

The incident happened shortly after 3 p.m. Twyne had borrowed a male passenger's cell phone, and an argument broke out when she allegedly refused to return it to him.

Bus driver Damian Haney, 39, of Lawrenceville tried to calm the situation, but the woman pulled out a knife, police said.

Other passengers took the knife from her, police said, but she then grabbed a pen from Haney's shirt pocket and stabbed him repeatedly in the face. The woman was subdued and taken into custody.

Haney was taken to Wellstar Kennestone Hospital in Marietta, where he was treated for his injuries and released, police said.

Twyne also was taken to the hospital for treatment of minor injuries sustained during the scuffle and was then released to police to be taken to the Cobb County Adult Detention Center. She was being held without bond Tuesday, according to Cobb County Sheriff's records.