The below is direct from AZStarnet.  This is actually a fairly accurate account.  There is more to the story of corse, but it sums it up well.

 I was there. This was a very unfortunate, but unavoidable turn of events.  Cuddos to all of the Officers involved in keeping their composure demonstrating great professionalism.  I know the family will blame us for this poor woman's death, but if you point a gun at a cop you get shot.  Everyone knows this.  I just hope the family realizes that because of HER actions they are not the only victim's, so are all the Officers involved last night as well as the neighbors who were displaced and alarmed by the events.  I hope she had faith in the Lord and is even now seated beside GOD in heaven.

AZStarnet:

Tucson police spokesman Officer Chuck Rydzak said Sunday that officers went to the woman's home Saturday night after she sent a text message to family members telling them goodbye.

Officers heard loud music coming from 57-year-old Joanna Lee Smith's house when they arrived. Smith refused to open her door and told officers to "just go away."

Officers then heard a single shot from inside the home.

They evacuated nearby residents and tried to contact Smith by knocking on the door, calling her phone and using a loudspeaker from a patrol car.

That's when officers began to break into Smith's window. As they broke a front window, Rydzak says Smith pointed a gun at them.

Officer Daniel Spencer then shot Smith, who later died at a hospital.

© 2009 The Associated Press. All rights reserved.