Stoic

sto·ic
(Stoicum)
noun
1.
a person who can endure pain or hardship without showing their feelings or complaining.
2.
a member of the ancient philosophical school of Stoicism
Urban Dictionary:
Someone who does not give a shit about the stupid things in this world that most people care so much about. Stoics do have emotions, but only for the things in this world that really matter. They are the most real people alive.

You can definitely call Arix stoic. Not that she exactly enjoys it. It often gets her into trouble she never seems to be able to complain about. She doesn't want to be the girl who gets bullied for standing up for others, but if not her, who? She questions everything. She needs to know, she wants to know.. is there really a difference between she and her, him and he?
No.
She seems to be the only one to realize this.