I'm sure she had mental problems and its truly sad she wasn't able to get help and now her child has no mother. That said, I'm in way upset with the way the police handled the situation as far as firing at her. With the constant threat of terrorism and being in the capitol of the free world, there is much less room to err. Should the official story change, then by all means do what needs done for justice.
As for saying we don't know what was going through her mind, we also don't k ow what was going through the officers mind. Terrorist don't think twice to use women and children to affect great loss on their enemies. What would be worse, not shooting and woman detonates bomb killing scores or shooting her because of the threat she posed?