Eva just performed the action early. (Pink Trigger)

"Okay, Player," EVA said, trying to apply her own problem-solving skills to the issue. She was known as a cunning witch, capable of spinning a red web of logic to entrap her foes... Maybe she could come up with a solution here? "Eva will eventually complete some miracle that will give birth to me, correct?"

So the story goes.

"So, why don't we say that in this story, she just did it a little early?"

Ah, that works! Eva did that thing early, and then you were born! Then, you gained the title of Endless Witch, and were free to participate in my Umineko story on this day-

"Stop." Before I could celebrate, the figure of the Golden Witch appeared before me, exactly as she once appeared in the portrait hung in Kinzo's mansion... only with a taunting smirk instead of a mysterious one. "I'm sorry, you two, I was just terribly interested in this. I haven't even had a chance to greet my cute new apprentice, yet!"

"Uh, no, not 'apprentice,'" EVA reminded her, returning her challenging smile with one of her own. "I'm the actual Endless Witch Beatrice now, got it, you washed up has-been? If you understand, you can just give up and die, okaaaay?!"

"Oh, of course, Great Lady!" Beatrice said with mock reverence, performing an unnecessarily fancy curtsy. "Well, if you're the new, qualified witch, that changes things! I'll step aside for you to take center stage... Just as soon as you grant me one small favor, oh great Beatrice!"

"Give me a deeeep bow, and kiss my shoes. I am not without mercy. I will consider it." The small witch kicked one foot forward and extended the toe of her shoe, inviting her Predecessor to actually do it.

"Yes, it's just... Eva did something rather amazing to give birth to this witch, didn't she? Something I expected would never be done in a million years! Can you spell it out for me?"

"Of course! Of course I can, it's just... she... uh," EVA babbled uselessly, obviously caught by her opponent's trap. "Help me out here, Player!"

...

"What's the matter, Player? Please, for my enjoyment, and the enjoyment of all the fans of our stories out there, spell out, in detail, what Eva managed to do to earn my title! Please, spell it out in as much detail as you can! Mystery buffs want to know all the details of just how she accomplished that feat, what the answer to the question was, what actually granted her the power... Once you spell all of those things out, it should be easy to prove she earned her title."

... I... can't.

"D-dammit, Player! We're so close now!" EVA complained. She blushed slightly, hiking up the edge of her skirt just slightly to show off her girlish legs. "W-what, do I have to promise you a little fan service to get you to write it? You can have my used stockings if you want 'em, just explain it to everyone!"

I said I can't! The details of that are a huge spoiler. I promised my readers this story would be spoiler-light. It's useless! It's all useless!!

"Hmhmhm... Aaaahahahaha!!" Beatrice cackled, throwing her head back briefly. "Oh, foolish sorcerer! Don't you know spoilers are what cruel witches love most of all?! When we find out a blood-stained truth, we can't help but throw it out as soon as we know it will bring despair to our helpless victims! If you refuse to utilize spoilers, you're fighting with one arm tied behind your back!"

Oh yeah? No spoilers, huh?! Well, here's a spoiler all of you can rely on. Sorry, but I'm going to ruin the rest of this chapter for you now.

I couldn't come up with anything else, and that witch killed me deader than Snape kills Dumbledore.