Kimberly Potter accidently shoots a felon and she will be prosecuted and possibly go to prison that way things are today.
Ashli Babbitt gets shot/murdered by a Congress person (unknown) and the person will face no prosecution.
Shhh! Nothing to see here. Move on.
Your logic if flawed.
Ashli was unarmed, and trying to crawl through a broken window. They (the multiple people on the other side) could have arrested her and taken her into custody on the spot, but someone chose to outright murder her.
Kimberly made a tragic mistake and should face the consequences of that action.