Well, then your character is probably doomed to Hell.
The Order doesn't care. Individual magi in the Order may care very much. Remember that Wizard Wars do not need justifications. Heck, Path of Strife Criamon magi might just decide to cut you down for the greater good.
Don't forget the Divine itself. Your character may very well find himself the subject of some Divine Retribution. Yes, you can be Plagued by an Angel. It's for your own good anyway.
She expects to be in the service of Odin when she dies, so she wouldn't be very repentant from a Christian point of view. She's doomed to hell as far as they are concerned.
Some of this will be Saga dependent , your ST will be the best one to answer.
If your Covenant is based in a predominantly Catholic country ,
then paying lip service at least could be expected.
If you are a genuine Pagan , and you don't succumb to Twilight as a wizard ,
then you could end up in the Magic Realm.
(you won't know for sure until after you die though)
If you have an Angel attacking , you can defend yourself by any means at your disposal.
Just because there is a Demon's Eternal Oblivion spell (page 160) ,
this does not preclude an Angel's Eternal Oblivion version.
Not as such , otherwise i would have quoted from it.
The only other possibility is The Hall of Heroes , which is not definitely stated to be anywhere.
But possibly beyond the Lunar Sphere.
The Magic Realm does not as yet have a stand alone sourcebook in the Realms of Power series.
RoP:TD does not cover any information directly on it so far as i know.