This "save and reload" superpower should have other limitations, or rather, not limitations of the ability itself, but rather some expected obstacles.
For example, if she simply transported her soul to a point in the past, then the destruction of the soul would render it meaningless.
However, considering the commonality of soul destruction in the abnormal world, since she claims with confidence that she can return to the past to resurrect, then "save and reload" should also be able to repair her own soul. Even so, to what extent this repair can be done, and whether it can even repair a soul destroyed by Impermanence's malice-filled strike, is still questionable.
