Whitney Decker, the mother of three girls who were allegedly murdered by their father Travis, had no idea that he was close to snapping... until people close to them detailed the red flags.

Travis Decker is accused of suffocating his three daughters; Paityn, nine, Evelyn, eight, and Olivia Decker, five, after tying them up with zip ties.

Whitney Decker, the mother of three girls who were allegedly murdered by their father Travis, had no idea that he was close to snapping... until people close to them detailed the…