Friya wasn't healed so much as reborn.
The healing tank was akin to a womb that allowed Faluel to share the Guardian blood that even Lesser Divine Beasts carried over from their ancestral primogenitor with her Harbinger.
The Hydra's latent Dragon essence nurtured Friya into the next best thing to the perfect fusion between the human and Hydra life force.
The strong fed the weak, pouring more of Faluel into the smaller creature until they became one. Where one minute ago a human woman with traces of Hydra blood in her system floated in pain, now stood a Hydra woman with traces of human blood.
As the process neared completion, Friya's body started to change. Large green scales bloomed over her skin, and six more necks sprouted in the space across her shoulders. Her nails turned into claws, and a long, stumpy tail formed on the small of her back.
