Wait I think I got it

I have been wondering where the author is trying to go with this story, as enticing as it is.
It's obvious that mc has been the prey for her whole life, so it's a given that she is very sensitive toward "predator". She understands that those predators lack anything remotely relate to love or empathy.
While she hasn't discovered Inseop's true nature, I think she can sense that he is one. That would explain why she see him as a mantis, and feels abhorrent when he speaks of love.
Also, we are given a glimpse of what she did as child, the scene where she killed the mantis. That's probably a premonition that she will eventually kill Inseop, or at least be the one stopping him.
Let's gooo doom romance brr brr brrrr