Who is Kailey Erhart? North Dakota mom slits throats of her three children, tells husband to ‘say goodbye to your kids’: Kailey Erhart, 22, stands accused of murdering her two daughters, ages three and five months, while her one-year-old son remains in critical condition. #TrueCrime #BreakingNews #JusticeForChildren #NorthDakota #CrimeStory