Oh, no. This devastating information really helps to narrow down the timeline of Nancy Guthrie's disappearance. Nancy's pacemaker has reportedly stopped syncing with her Apple devices. A law enforcement insider told Fox News on Tuesday that Savannah's mother's medical device stopped syncing at around 2 a.m. on Sunday. Cops have previously said they believe the 84-year-old was taken from her home at some point between 1 a.m. and 4 a.m. on Sunday, so this would align with that. Nancy's phone and Apple Watch were left inside her house.