I have thought this for a long time about how Kyouka's story will end, and seeing how close she is to Sayla further cements. I think in this fight, first of all when it is over Erza and Kyouka will have each other's respect, anyway Erza will win I think everyone knows that, but I think Kyouka will survive either Erza will spear her or Erza just assume she is dead, though spearing her works better towards what I think is going to happen another point against Kyouka should a lowly human not only defeat her but show her sympathy and mercey, Kyouka will survive so Mard Guille or even E.N.D. her for being a failure, for caring for Sayla which is human like behavior, and for the indignity of having a human sho mercey towards her. I think that is her destiny to get screwed over by her superiors.
That and / or perhaps in last dying breath help turn the corner for the good guys like Ultear did when she restored the Tenrou tree. She is second in command (third in command if you are counting E.N.D.) and second command characters in the Ballem Alliance guilds have a dramatic end, Ultear redemmed herself and helped Fairy Tail turn things around by restoring the Tenrou tree, Cobra was betrayed by brain. Kyouka she is the heart of the group like Cobra and Ultear were.