Board Thread:General Grimm Discussion/@comment-26368233-20150530203609/@comment-68.156.159.10-20151111205039

I believe Juliette did not kill Nick when he was choking her because there was still some of the 'old' Juliette left, the Juliette who would have hated what she had become.

But ultimately the answer is and always will be "Because it was in the script."