To some extent, yes, but unlike the mage knight Celes her power was not one that the empire designed and so it was inherently unstable. Also, both Celes and Cid were raised in the Empire and both railed against the authority. It is possible that as Terra grew into her powers she saw the corruption and attacked (I seem to recall the opening mention her as the witch that burned some soldiers), only to lose her memory of the whole situation after being subjected to the slave crown.