I think the problem there is that Isabella is obsessed with Raymond so everytime he rejects her she gets angry at him and her father enables the conflict. Plus the prince is always gonna be an issue as well because of his obsession with MC. Overall tho I think being bitter with your enemy killing you thousands of times makes you think it's better to kill before getting killed. That's just my viewpoint considering the story so far tho ╮(￣▽￣)╭
Yeah, that's probably how they think now (￣∇￣")
I totally forgot about the prince, it has been so long since I have read this...
But maybe, try to hide themselves without killing others would be a solution. Or just going on a trip far away without saying they are together...
I mean, wouldn't it be easier to just not make enemies? That way, there would be less problems to stay alive...