MC is seemingly nigh omnipotent by proxy of her fairy friends yet she hasn't even asked them if they could do anything about the starvation in the human land, mind control them to not want to fight, create a barrier to prevent humans from coming or anything of the sort
Even if they couldn't do something so convenient for her in one fell swoop she definitely has the power to resolve the situation peacefully over most likely a short amount of time regardless of what plot device you could come up with at this point that wouldn't contradict what is already established (barring something extremely dumb)
But even if we did come up with some such extremely dumb plot device it still doesn't excuse MC from not even exploring the possibility that maybe she could use her powers to help the impoverished she learnt of from a few chapters back, maybe by seeing how many of those trees she created back then for those starving children she could create. Can I create those trees remotely while I chill at home on the couch? Who knows, who cares!
No, let's just chill with the king, eat cake with some femboy and agonize whether I should be a cat or not
It's annoying because there are so many ways this exact story could have been written in a way that doesn't sacrifice the plot, vibe or characterization whatsoever, but now it's way past the point where it could be smoothed over reasonably