Alright, been a while since I've done anything here... And I'm not even going to pretend to have any idea what has been going on :lol.
But let me start with something: don't get into an argument with people seeking suicide by telling them that suicide is wrong or hurts people. Even with Oriko here, I'm getting the impression that she's fully aware how she's going to hurt people. She knows all the implications of what she's doing, and has most likely already justified everything to herself several times over during her time in the safehouse. Antagonizing and pushing forcibly against her will only make her justify them more, which makes it more difficult to pull her out of it later.
Furthermore, shouting won't achieve anything. Don't escalate. Zingers are bad, and only make you feel accomplished for a short while before you realize you've most likely just hurt the trust of a person already on thin ice. Plus, Oriko seems to be digging trenches because of this and preparing the hill to die on. So no guilt-tripping.
With that said, I rather like where
@Muramasa's vote is going, but I think we should build it a bit to offer the alternative rather than give a speech. Not by throwing it in, but by aiding Oriko in coming to that conclusion too. Change needs to come voluntarily, though we can help the process along. Frankly, I think we'd need Kirika's active effort for that in conjunction with our own... But now, let
Oriko talk.
Granted, we're on damage control mode now, but eh...
[x] Calm down a bit before continuing. Tone: Gentle,
but firm. Don't raise your voice. Don't antagonize.
[x] But why does it have to be Oriko?
[x] Your powers showed you what you wanted. A way to die meaningfully. But that's not what you wished for.
[x] Politely request her to put it all out and tell you everything, no hiding, no single-line answers. If she tries to circumvent the question or leaves out details in any way, gently call her out on it, and swerve back to the topic. "It's necessary" is not an answer.
The problem with speeches is that they assume things about Oriko. Let her speak instead about how everything needs to go, and speak out well, so maybe she can actually confront any. The first two lines are good for leading into this, in my opinion, but the rest makes me go
"Meh". If there's need, important questions can be asked about the things she says, but not in a guilt-tripping or confrontational manner. Only Oriko can change Oriko's mind.
Heads will roll later.