Poor girl... victimised because of peoples foolish beliefs in what the church say is evil. I can understand why the girl wants revenge, but I pity her because someone used her hatred.
So... she lost her family to corrupt people, gains power and wants to destroy the corrupt people... then she pots with the corrupt people to go against a person that is publicly known to be reverting the ways things are for the better... well in her defense she clearly was and is too young to the ways of the world and how even now she is still being manipulated.
If she's non magical (charms she was handing out in town had no mana) then the ring is what's creating the undead, so why did her powerful mage benefactor/guardian give her the ring instead of using it himself? Seems like she's being setup as the highly visible fall guy for this operation. Bet he just teleports away leaving her behind when the two get caught.
@MCX01 I bet that the people who are behind the fall of her family are the ones manipulating her currently. @SteveJust Isn't that kinda obvious? Only reason you'd manipulate someone like that is to make them the fall guy while you gather "research data".