Moffat may torture us w/ convoluted ontological paradoxes, but he seems to be a softie when it comes to killing off beloved characters. When he does, he tends to bring them back in some way. River and her crew were "saved." Clara, Rory, Amy, & the Doctor kept coming back. Amy & Rory got to live out their whole lives together before their final death. The father was saved in "The Doctor, the Widow, & the Wardrobe." It was even him who suggested that Jenny live in "The Doctor's Daughter."