Isn't her goal a bit wrong? I mean, the one who turned her into a sword was the emperor and the magicians, the later were all killed by the former once the process was done to keep it a secret. Thus, the citizens were innocent, she was planning to make a tyrant to ruin the country, what about the people who also struggled with lives there knowing nothing yet had to suffer just because she hate that empire while they happened to be the empire's people? Shouldn't she just take revenge on the emperor and those magicians? And she wasn't going to do things herself, just let a guy to do it for her?