Oh...I feel so bad. :(

-The attack was in the Rukongai as the Gotei are trying to keep them from reaching the Seireitei. (I never specified in the post but, to me, it was assumed considering the plot/setting).
-The ground where the battle was would have been charred and reduced to ash, so there wouldn't have been any trace of her. (That was in my post)

Regardless, I'm going to start my next post. You don't have to fix those points if you don't want to. Again, I apologize for my lack of clarity. :(