Everyone knew the admin wanted war.
Congress loves to have these votes that they can basically absolve themselves of any responsibility. the authorization to use military force was not the first and is certainly not the last.
But if her defense of her vote is "well I thought bush would try diplomacy or sanctions" then she's a rube.
Nothing was stopping that war short of Saddam very publicly throwing up his hands, declaring "I got nothing!" and then letting unfettered inspections happen.
And that was about as likely to happen as bush looking for a diplomatic solution.
Dubya at the time was saying he was going to try diplomacy.
Saddam pretty much did throw his hands up in the air and declare I got nothing, there were even UN inspectors running around not finding jack shit.
They had to have Powell fall on his sword over the yellow cake BS later.
You know all this.
If she had voted against it at the time, she would have looked a lot worse than giving him a mandate to make a decision.
That is not being a rube.