[A heavy sigh leaves her, tiny frame slouching a bit from her usual perfect and rigid posture, before her expression settles into something that's altogether weary, regretful and completely resolved to her fate. Not that he can see it; it's just a rare display of her heart]
I have a duty to protect my people and country. I wish to reverse the destruction that came upon them, so I became a Servant in order to fight for a relic that possesses the power to accomplish that.
I must return to continue my battle. So-- I must endure this place til the opportunity to escape arises, and I cannot allow anything to distract or give me hesitation.