The idea of another change in the monarchy was not to be thought of, now that Darius had subdued Babylon.

She had indeed a half-concerted plan with Phraortes to seize the power in Media in case the king were defeated in Babylonia, and the scroll she had so imprudently forgotten that very morning was merely an order to lay aside all such plans for the present, since the king had returned in triumph.
As far as her conscience was concerned, Atossa would as soon have overthrown and murdered the king to gratify the personal anger she felt against him at the present moment, as she would have wrecked the universe to possess a jewel she fancied.

There existed in her mind no idea of proportion between the gratification of her passions and the means she might employ thereto; provided one gratification did not interfere with another which she always saw beyond.

Nothing startled her on account of its mere magnitude; no plan was rejected by her merely because it implied ruin to a countless number of human beings who were useless to her.

She coldly calculated the amount of satisfaction she could at any time obtain for her wishes and desires, so as not to prejudice the gratification of all the possible passions she might hereafter experience.
As for injuring Zoroaster, she would not have thought of it.