A twenty-six-year-old Summerville woman was arrested on Thursday after she was accused of biting her grandmother on the wrist and arm.  According to a report from the Summerville Police Department, the woman was riding in the car with her grandmother when she became irate and bit her.  Police arrested Josie Laine Barker and charged her with disorderly conduct.  She was booked into the Chattooga County Jail on Thursday afternoon.