Against Time

Seth's hand went through the middle of her chest, piercing the Illusive Ethereal Goddess' body and leaving on the other side. There was no blood coming out of that wound, since her body was made out of ethereal particles, but even so, that version of her would not be able to regenerate after getting hit with an attack at that level. 

An injury like that could easily be considered a mortal wound for anyone, but the individual who had just suffered it, was not acting accordingly. She seemed surprised instead of feeling fear or pain. 

For the goddess, that wound could not even be considered as a real injury, since it was not able to reach her "source". What went through her mind at that moment, was the incomprehensible fact that Seth's powers had clashed against her divine ethereal power and defeated it. He had freed himself from her grasp and managed to counterattack her.