Setting
It wouldn't be long before the entire orb of water was frozen solid with Nagara inside it, unless she was able to break free.
It was then that the eelheads grew, not in size, but considerable number, like the many-headed hydra of myth, expanding around their host in search of Teo.
In the meantime, the water of the lake flowed at his command. A current pushed its way through the eels towards the crack in Nagara's chest - more exploratory than forceful, aimed to figure out what exactly the nature of the apparent portal was.
What he did not know was what Teo dared to explore- the portal within the creature lead to something else entirely. Somewhere alien and bizarre. Immediately on the other side were the same eels Teo saw spilling forth into his world trying to swim through, and beyond that, a space filled with thick black waters. The surface was not so far, but even there was inhabited by the eels. Every crevice, every spot was inhabited by them, and not every one alive. Carcasses rotted in the water, eels cannibalized one another in desperate hunger, and not even the largest of them, coiled around mountains in the distance, were safe from the sheer numbers of their kin.
It was a world fueled by hunger, and nothing else.
He himself soon followed, rising from the lake upon a swirling torrent of water. "I don't know what you are," he yelled, "but I know that you are filled with wrongness!"
As he yelled, he swept a hand forwards and sent a cascade of water down towards the woman, blasting into the eels coming from her midsection. Those creatures ... whatever they were, they had no minds. They had no souls. He had no qualms in ending them.
Again, the water began to solidify into ice, encompassing the writhing eels with the aim of the intense cold killing them, their own frozen bodies preventing more of them emerging.
Slipping away in that black ooze from the split down her middle were the bitten and severed remains of the frozen eels, spat out from the other side of the portal.
Emeka didn't dare move. He couldn't even breathe. What had caused the boy to react in such a fashion so suddenly?
If he didn't deal with her, was it possible that the corruption of that world could infect his home? That black sea spill forth into it?
He couldn't allow that.
The water spirit descended to the beach where Nagara lay, sweeping his arm around in a fluid motion to gather the water around her, lifting her form into the air in its spiralling embrace. Closing his eyes, he directed the water towards her mouth just as he had with the centipede, and sent it down her throat, into her body towards her heart, to grasp it tightly in an icy grip and stop it.
Emeka's eyes shot open. Not once had he ever heard the woman speak a comprehensible word. He thought she was either mute, or a creature that solely did what Sarka told it to. His interest peaked, he came forth from his safe haven, looking up at Teo. If he hadn't done the deed too quickly, the man tried to halt him.
"Wait. Wait, Teo!"
He shuddered - literally, ripples rolling across him, before glancing at Emeka. "Be careful. That ice won't hold forever. The creatures will break out again."
"I'm not coming any closer. Just... do not kill her yet."
The woman curled up to her best ability where she was, hands clasped over her face. She was cowering. "Put her down."
"Speak to us," Teo said, his voice soft and calm, a sharp contrast to the outburst he'd had when he felt the horror within her. "Who are you? How did you come to be like this?"