In an interview, she described what happened on Thursday when a suspected gunman, identified as Major Nidal Malik Hasan, 39, opened fire at the Soldiers Readiness Processing Center at Fort Hood.
Thirteen people died in the shooting horror, 12 soldiers and one civilian, and 28 more were wounded.
Hasan, an Army psychiatrist who was trained to treat war wounded, was shot four times by police, a base spokesman said. He was unconscious but in stable condition in the Brooke Army Medical Center in San Antonio where he was transferred.
Update Nov 12, 2009:
US Army major Nidal Malik Hasan, suspected of shooting colleagues at the Fort Hood military base in Texas last week will face13 initial murder charges.
The 39-year-old was shot by police and remains in hospital. He has refused to speak to investigators.
BBC News reported that President Obama has ordered a review after US intelligence authorities said they knew Maj Hasan had been in contact with a cleric sympathetic to al-Qaeda.