I think the only reason why she didnt die is becuase the plot has to flow according the book so since she's suppose to die by Arsene hand, the universe came through and said "not today b" so ultimately she got a new "power" cause we all know he won't kill her
I think the only reason why she didnt die is becuase the plot has to flow according the book so since she's suppose to die by Arsene hand, the universe came through and said "not today b" so ultimately she got a new "power" cause we all know he won't kill her