I was wondering if there was going to be some obstacle to their rapid soulmatism and here we are.
This drama is so well-written. Because ostensibly it's a stray arrow by an idiot during a hunt but to her it brings all her trauma from first life back - both being shot at and his saving her (she does not react to any danger the way she does to arrows and it makes so much sense.)
And then she has that desperate conversation with the mysterious book author when she asks him, despairingly, that if she's changed so many things, why is it all still going the same way and his answer is basically nobody can change the grand sweep of history.
That is her conclusion, and that's when she loses it, and that is why she spends the rest of the episode pushing puzzled Song Mo away (even if she doesn't plan to marry her idiot first life husband either.)
Side note - I love that he makes it clear no he does not enjoy torture or being superior. She just said what she said because she's upset and terrified and grieving and lashing out, but he takes everything she says to heart. Every time he's so earnest tho it makes her more terrified because she does want to protect him, she wants to protect herself, and it reminds her of how dear he is and how doomed they both are by the narrative.
It makes SO much sense - she has decided that the ultimate fate is unavoidable and she's panicking and flailing - maybe if they are apart, they won't die together, she gets to live and so does he (though she's clearly worried even that won't work) or at the very worst, she won't have to see his tragic ending.
But that is what makes this so delicious - it's not just that for once a freak out makes sense (no ridiculous misunderstanding or case of idiocy here) but that clearly they will get married partway through the drama and will have a loving marriage all that - which means that at some point she goes "there is every chance of tragic ending for us - of his losing everything, of rebellion, opprobrium and death - every chance we will die together" and then still chooses to be with him, to love him, to try to overcome the unovercomable fate or if she can't do so then live with him as long as she can. AAAAAAAAAAAAAAAA
She goes in with eyes wide open, knowing this is likely to end badly but going "worth it." I CAAAAAAN'T!!!
(Side note - I think the salvation is that the monk may be right - she may not be able to change the grand sweep of history. But she does not need to - she just needs to change at the margins so they get to live longer and happily. I mean it's all a question of what is big picture enough to be immutable - in one sense, everyone's life ends in death - so yeah the ending is the same in the sense both her and SM are bound to die some day - but maybe she can change enough they get to die old and after a good life.)
