Would you have done what Aurora did?

Yeah! I want to know what the deal is with the guy from the final scene. And X Company's strongest suit is indeed having characters in these truly compromising positions that really make the audience ask themselves what they would do.

Actually being a spy would be different than having to kill to spare someone when you're not a spy. If Aurora had killed herself after she killed René, she would have betrayed her team and mission especially since she is their leader.