Lena Headey Playing Villain In Dredd?

BleedingCool is reporting a rumor that 300 and Sarah Connor Chronicles star Lena Headey is joining Dredd. The Judge Dredd reboot has already cast Karl Urban in the lead and Olivia Thirlby in a supporting role. Headey would play Madeline Madrigal (Ma-Ma) a scared villain that leads the gang who controls a part of the city.