I feel torn about this as Mia, if she is even as half as competent as Philia, is absolutely going to wreck shop. I just hope she doesn't utterly destroy the country that Philia did protect and improve for the time she was there.
in most stories like this the sister tends to be a spoiled rotten bitch, it is truly wonderfull to see a sister with a working head on her shoulders who actually care for and love her older sister and refuse to belive the lies and tries to find out the truth.