Quick death. Instead of her feeling the pain by the fire and prolonging the agony whilst still alive.
Exactly, burn a person is a really cruel way to kill someone, it is really painfull and not as fast as many people think it is!
I have read descriptions and they say people yell for a long time! The fire is not strong enought to kill a person in a fast way, is like they are cooking a person before the fire is strong enought to kill the person!
veeeery slooooowly cooking at that... one of the most common and sadistic ways to torture and kill someone at the same time I'd say...
everyone is saying quick death which isn't wrong per se but I think he also helped her reincarnate in a way (possibly). He was a strong archmage and maybe there is more to his connection with her like she saved him before so he might've poured all his powers into that one spell
How did he save her when he just shot an arrow towards her body?