He doesn't stop a lot of things that cause him pain. Your world is severely broken. You demanded your independence, and now you are angry with the one who loved you enough to give it to you. Nothing is as it should be, as Papa desires it to be, and as it will be one day. Right now your world is lost in darkness and chaos, and horrible things happen to those that he is especially fond of? Papa has never needed evil to accomplish his good purposes. It is you humans who have embraced evil and Papa has responded with goodness. What happened to Missy was the work of evil and no one in your world is immune from it.