[@Savato]

It's never stated that she's completely invincible. She was able to regenerate from massive damage, but to state this equates to complete invincibility is a no-limits fallacy. 

Characters capable of soular, conceptual, or plot-based or time-based annihilation would be able to kill her even with infinite regen. Chars capable of complete matter destruction, absorption and regen-counters would probably also be able to put her down. But regardless, her sheer speed, strength and destructive capability put her far above the likes of Palpatine by feats.

I would argue that Palpatine would have a shot at mind-wiping her, considering his mastery of mind control and she has no real feats resisting telepathy of that scale. But it would definitely not be easy, and she could simply annihilate him while he tried that.