Lisa Marie Nowak , 46 , is accused of stalking Air Force Capt . Colleen Shipman . Prosecutors say Nowak , wearing diapers , drove 900 miles to confront Shipman . Nowak donned disguise , pepper-sprayed Shipman , authorities say . She was arrested in November and charged with attempted murder.
Lisa Marie Nowak , 46 , is accused of stalking Air Force Capt . Colleen Shipman . Prosecutors say Nowak , wearing diapers , drove 900 miles to confront Shipman . Nowak donned disguise , pepper-sprayed Shipman , authorities say . Ex-astronaut says she was at airport to talk to Shipman .