I know the two hundred years thing feels kinda silly, but this is exactly the sort of thing you'd expect to hear from a girl who is absolutely over-the-moon for a guy she loves.
Besides, we're talking about a girl, here, who went full-on Juliet Capulet here. Literally. Blade through the chest just so she can be with her Romeo in the next life. And at the same freakin' age, no less!
Pfft. You know, that would actually make sense. That this whole story was the author going, "Hmmm... What if I took Romeo and Juliet, put it in an isekai-style fantasy settling, but told the story about what happens after Romeo and Juliet get themselves killed?"