Even if she possessed an immortal tool, in this Cave Sky, the divine power erupt from any phoenix was enough to crush her - having an immortal tool would be useless.
Even if she dared to forcefully resist, the phoenix could easily reduce her to ash. Moreover, in the Cave Sky, all spirits responded to the will of the phoenix. To challenge the phoenix was equivalent to declaring war against all the spirits in the area where the phoenix resided.
Therefore, even though she had created the best conditions for herself, she found her strength still insufficient to achieve the outcome she desired. She could only stare as the phoenix, so close yet untouchable, soared above her head.
Now, a drop of Phoenix Blood Essence laid in front of her, and all she needed to give in return was to serve as a handmaid for a day. Was this truly a loss?