Not mentally frustrated but frustrated by how it's handled in the show
like here for example.(the world IS just like our's, after all, minus the devil stuff, so why didn't a parent-less kid seek help? Ugh)
The question itself isn't the problem, your frustration about it is, because it's completely "normal" for people to act like this.
So obviously you can't just criticize it with one sentence like that, because it's what we call "weltfremd"
"Just don't be oppressed, 4 head"