@twincubus
A person can change, but only up to a degree. Certainly every person has dark traits in his character, and every person has the ability to kill others and perform inhumane acts, the question regarding psychopathology is really what are the triggers necessary and what are the psychological effects from doing this. The people serving as guards at concentration camps during WW2 were not only psychos, or sadists, the majority were normal people that were following orders or that felt obliged to do it due to one reason or another. They felt physically and mentally ill from the acts they had to perform and watch (this is documented). The issue here is not only that she killed them, but 1) she intentionally did it with the full knowledge it's only for xp, 2) there was no psychologically serious enough (or at least it was not depicted) trigger that made this happen, 3) she didn't feel anything major about the whole thing. Which leads one to believe that she was a psychopath to begin with, however this disagrees with the (however little) initial depiction we got.
she had to eat one of her siblings to survive
It was a spider. Go and eat a spider, you won't turn into a psycho off off that.
she has to kill other monster to survive, monsters that are shown to be sentient to some level
Hunters kill such animals without turning into mass murderers, so your point doesn't make sense. It's not something that will make you a psycho if you were not one to begin with.
she has been put in many situations that couldve been traumatic, like when the humans assaulted her home, being terrorized for a long time by alaba while she tried to hide from it, and all of those times she narrowly escaped death.
She was clearly motivated by the xp and not some trauma that made her have a change of heart.
and on top of all that, there are exterior factors that, at some point, influenced her, like her mother's mind control.
But we clearly saw what happened at the specific moment of the fight.
she lost any humanity she had the moment she was born as a spider, because trying to live under human standards of morals and ethics would get her killed.
That's also incorrect. She has been shown to think throughout this whole thing as a normal human for the most part. As far as her xp farming the humans goes, it didn't seem like she was in any danger, she clearly had the upper hand and they were trying to flee through teleportation. So no, human moral standards would not have killed her, and if anything she kept to those until she saw the xp she got.
i dont think we are at a point where we can judge if shes evil or not because, for now, she is a spider living under spider rules.
Oh but you can judge that she's being evil just fine. By your logic if you enter a tank, you're a tank and you can live by tanks' rules. Which is nothing short of ridiculous. Her body is different, her mind seems to be very much human.
she did feel motivated to kill them due to exp greed tho lmao
I wonder how you manage to reconcile this fact with the rest of your comment.