User blog comment:TheDoctor230/What I Want For Season 6/@comment-26537965-20170928194937/@comment-26537965-20171003122426

No proof that Barry created Killer Frost. Caitlin might have been a dorimant meta-human in the Pre-Flashpoint timeline. Besides, even if he did, he did not mean to do it. Everyone would want to save their parents and everyone would have done the same thing if they were in his place. He was in grief after all.