Fire loved Thunder, she really did, so when she found out that he loved someone else she is devastated... She turns evil, killing him and his lover... After her killing streak has ended she only has a couple friends left, Blizzard and Sage. With their help, she becomes strong, physically and mentallly.

Years later, she battles with the devil's that have risen from hell, she wins and nobody dies... Yet
She feels giddy, and moments later, collapses, Sage and Blizzard rushing to her side... A devil has poisoned her, but before she dies she makes peace with her enemies, and finally lets go of life, a tragic loss for one so young.

This scene is her telling Thunder how she feels, notice her claws O_o XD