FifthView
Vala
Specifically in this case it's been established that being hit with your elemental weakness will greatly depower anybody if the magic is powerful enough. Even the mightiest gods aren't exempt, although they will recover fully within about ten minutes or so.
The MC is lightning based and was already out of power, before taking two hits from a divine earth magic user. The third hit can be seen from outer space and if I followed the rules the she'd be so dead.
I think it's solved by having a shot of the brother on his knees praying while he reinforcements he got to run around him to try and rescue the MC. Implied divine intervention. Allowing the MC to hang onto life by a thread. She can't win the fight, anyway.
It'll work if the reader likes the character but won't if they don't. :throwball:
I'm not sure I understand everything you are describing, and I don't have the context of the whole story, so I'm not sure if this will work...but maybe the hits are worse while the target has power, and the fact that she's already used up her power means that they didn't hit quite as hard as they normally would?
I'm getting that lightning is opposite earth here. Getting hit by your opposite (or weakness) "will greatly depower," but what if you are already out of power? I can see where a sudden total loss of power, from such a hit, might be a great enough shock (pun, heh) that it can kill. But perhaps already being out of power limits the effect.
Maybe this would be something that neither the characters nor the readers understand at the moment this scene is happening, but this facet of "the rules" of that world can be made clear later when the group of characters are talking. One says, "God saved you sis!" and someone pipes in to say, "Naw, dude, God had nothing to do with it. She had already used up her power. This is the only thing that saved her." And then of course, they can brawl over the theological implications/dispute, heh.