When Nerphyl entered the Mutated Tiger's body that had lost its soul, it felt like its body was being splashed with hot water. The mana in Mutated Tiger's body slowly melted Nerphyl's body.
She screamed in pain but in that dark and silent place, no one would be able to hear her. But the mana that was in Mutated Tiger's body was not meant to kill Nephryl but to change her body slowly.
Starting from the smooth outer skin of the sylph it slowly begins to dry and fall off. Like a snake changing its skin, Nerphyl re-emerged with a new, stronger skin. But this process occurs repeatedly. And every time new skin appears it will become stronger and thicker until Nerphyl's body is filled with very thick wrinkles.
Then Nerphyl felt her flesh as if it was being immersed in boiling oil. Nerphyl's flesh melted and then solidified again, over and over again until it almost drove Nerphyl mad. But she still held it.