In The Gun, she and her two friends stole Laura's leather jacket. She was later arrested by Carl Winslow, but she got out on bail. The next day, she appeared in the parking lot, and showed Laura and Steve her gun.
She later shoots Laura's friend, Josie in the arm because Josie refused to give Toni her new shoes.
After this, Toni wasn't seen or mentioned again, although it's presumed that she was arrested and imprisoned (this time for good).