She might not have even realized that she had been infected by the Illusion Dream.
If the Illusion Dream is the "Dusk Seed," then her essence would be the "Dusk Tribe." She believed her plan was to save the world, but in reality, if Russell truly implemented her "salvation plan," it would likely release the Illusion Dream directly.
One of the reasons Qiao fled from the Babel Tower might also be related to this.
He had at least become consciously aware of problems with the Deer Head, which is why he specifically turned off the Deer Head when he mentioned this topic to Russell. Although Qiao himself had lost the consciousness to resist and struggle... Since he chose to reveal this secret to Russell in such an indirect manner, it indicated that Qiao had not completely given up on the future; he had merely entrusted all possibilities and choices to Russell.
—The Deer Head was not entirely an ally.