The domain was broken even before Anfang's World Will had a chance to arrive.
Sienna's body stopped levitating when Eren finished speaking. It was unclear if the half-slumbering consciousness became powerless after Eren's attack or if she was so enraged by his act that she lost control over herself.
Sienna had a shocked look on her face when she died for good this time. And one could see that there remained a hint of fear in her eyes. She was terrified of someone who had killed her without caring about her origins or her relationship with him.
'This "version" of him! He'll be an unstoppable threat to all of us if we let him grow. I'll have to do something about it. I… I'll have to wake up soon from my slumber to…'
The half-slumbering consciousness had this thought as she left the reaches of Anfang's World Will after her shell died. She seemed desperate to wake up from her supposed slumber after witnessing how steadily Eren was growing.
