Anyways, even if she didn´t use Blood Magic I´m sure she wouldn´t mind it as long as you use it to serve man. I don´t think I ever read Andraste explicitly forbade Blood Magic.
Andraste did say that magic exists to serve man not to rule over them. If you do not even believe she says no to blood magic, what do you feel she means by this?
He has proven he can´t even care for his lover, let alone a country. The Warden however saved that bloody country! If it wasn´t for your Warden all these people possibly refusing your rule would be dead, ghouls or broodmothers!
Yes, and they're very grateful. But since you do not fit the minimum qualifications as Queen (human, not a mage, noble) then you can't do it. That's like saying if a twenty-three year old born in Mexico single-handedly saved the United States (and possibly more than that) from a nuclear explosion then they should get to be President. Maybe in an ideal world but the fact remains that they do not meet the minimum qualifications for the role (being born in the US and being at least 35).
It may not be fair, but life isn't fair and Ferelden sure as hell isn't or did you miss the part where the CE gets executed if not recruited for attempting to defend themselves and others from getting raped?