Probably Elsa sees "fate" as something romantic, perhaps even divine, something natural. She however, looks at "plot" and she sees something deliberate, something SOMEONE has planned for their own gain, artificial.
Its precisely bc it often happens irl that its often used in fiction, its very hard to know when "caring" starts "harming" until you have already fucked up a couple of times and you have gotten that EXPERIENCE, this is what Elsa and Eve are going through right now
Surely the nobles who have a seizable control of the country will stay still while the enlighten couple gets rid of them and by no means will throw them into a conflict, also other kingdoms taking the chance to do their own thing
De we just forget that the main reason for euphy to become a spirit is so that she can actually shut down the nobility? Without that they cant do sht to the nobles without making anis like a tyrant