It’s Killer Frost time! Will Caitlin become evil? Nope. At least not permanently. Will they find a last time solution? Almost sure before the Crossover event. Will it make sense? Not likely! Come react.
Sorry for the tardiness, I just got home. So meanwhile, reac, complain, remember the speed force, complain so more, grief a little, enter the acceptance stage, and then come back for the next episode! I will see you in the comments.