@Eicosan
I doubt the author would give it as much thought as you have, after all the MC is meant to be a master negotiator not a warfare specialist, but let's hope that the author gives us a satisfying solution that would do your analysis justice.
My username is pretty long, which I believe is causing formatting issues as shown in the reddit post
https://www.reddit.com/r/mangadex/comments/l4mtia/username_is_so_long_it_causes_formatting_issues/
Its not a modern 20th/21st century world. Its ridiculous to think that badly on pillaging an enemy who's out to kill you.
@zarian2 puts it quite nicely.
@zamasuxd
Karen is the MC who has been transported to a fantasy game world. She's now in the body of the villainess of that game but is trying to be kind person, as well as getting the Prince (fiancé), who she doesn't love, to be attracted to her (instead of the protagonist from the game, Alice)...