NEW : They say # ##a Graham was unhappy before her husband 's death . NEW : The defense says his death was the result of an ` ` argument - grab - push - push '' NEW : The court examines text messages that Graham sent around the time of the death . Her attorney , federal public defender Michael Donahoe , has said the FBI did not record the first hour and 20 minutes of Graham 's interrogation . Graham has admitted pushing Cody Johnson during an argument in a national park .
NEW : They say # ##a Graham was unhappy before her husband 's death . NEW : The defense says his death was the result of an ` ` argument - grab - push - push '' NEW : The court examines text messages that Graham sent around the time of the death . Graham has admitted pushing Cody Johnson during an argument in a national park .