Having said that, I don't see any justification for tasering her. We pretty much have to suspect a weapon and/or be getting a lot of belligerent behavior before our SOP calls for a taser.
She could have just killed her children and was suicidal. She crashed her car, and is sitting there in an unresponsive catatonic state.
She has a gun in her lap, but is afraid to use it on herself. So she chooses suicide by cop and makes the decision to shoot at the police officer as soon as he gets close.
Nah. Could never happen. What are the odds?
You're right. The cop should just ignore procedure and help the poor woman. WE know it's OK (now that it's over, of course).