Board Thread:Episode Discussion/@comment-3125844-20150417214605/@comment-82.21.236.214-20150502200555

The royals wouldn't kill Diana, they need her. Kelly they want dead. Kelly has less reason than Nick not to kill Juliette and as a far more experienced Grimm would find it easier to kill her than Juliette thought Nick would.

Kelly would not expose Diana to danger by taking her to Nick's house. Diana being there may well be an illusion.

The only unforgiveable thing the royals could do to Nick and cause him to scream would be to kill Kelly and perhaps record the fight so Nick can watch her die. That would cause him to go after the royals in a reckless manner.