I pulled this off of NU forums, so take it with a grain of salt, but by means of magic in the "after story" of the main novel (or side story, however you wanna call it), the MC see's her Korean body, which is dying from stomach cancer in a private hospital surrounded by her father and 2 brothers. Essentially, the male members claim that they loved her (Korean MC) all along, but MC replies with all the years of abuse (physical and mental) she endured at their hands, to which they have no response. They try and convince her to come back, but MC basically cuts off her Korean bodies life support and tells them she doesn't forgive them, and that they should live with themselves knowing that they essentially abused her to her death. There's some more words spoken then that but that's the gist. Honestly, I'm pretty happy with that ending.