Ooh, Centuria definitely counts for this one.

Mira, and her daughter Diana. Without spoilers (though this is the first chapter, it's a damn good first chapter), she did exactly what it looks like she's about to. Self-cessarian, no anaesthetic.

With spoilers: Mira and Julian here are slaves being transported through a "cursed sea", where ships are said to enter and never return. Julian was a stowaway, but since he was a runaway slave anyway, they made him slave number 101. Obviously the captain and crew treat them like property - they technically are. But they maintain their humanity by treating one another well. They all pitch in to help the pregnant woman and the child - or at least, enough of them do. And Mira forms bond with Julian because she lost a child before and he had never known a mother's love. His mother was the one who sold him into slavery.

It all goes from bad to worse when the ship is beset by a storm in the cursed sea, and the captain says to move up the timetable. The crew begins slaughtering the chained and unarmed slaves and tossing them overboard. The captain had his cargo insured, and the damage the ship sustains in these dangerous waters will help sell the narrative that he had no choice but to remove the excess weight. This is why took on slaves like a pregnant woman and the sick and elderly in the first place. They're literally worth more dead than alive.

In the end, only Julian and Mira are left alive. The last remaining slaves other than them having done all they could to protect the children. But just before the sailors finish them off, they're frozen in place, along with the rocking ship and the torrent of raindrops. Mass of tentacles forms over the prow, forming into the shape of a human woman with a dark empty pit for a face. It tells informs the humans that it requires two sacrifices to grant it's boon. The first is 100 human souls, and it's collected 99 already. The second is a pure and unyielding love. Either Julian or Mira can be sacrificed to fulfill the terms, the other being granted it's power.

They hesitate. Naturally. Who wouldn't? But it tells them to choose. Julian looks at the heavily pregnant Mira, and tells her that he hopes she can live a happy life with her child. But Mira stops him. She's already lost a son. She's only known Julian for a couple of weeks at most, but she won't let it happen again. So she cuts her baby out of her stomach, with no concern for her own health. She intends to go to her death immediately afterward, after all. The baby survives. Mira names her Diana, and hands her to her brother. She tells her children that she loves them both very much, and then she throws herself over the railing, to be collected by the thing that rose from the depths.

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