Who shoots Ashley/Kaidan?
Liara & James - picked Liara first, she makes a comment about the council when talking with Bailey, James is in the front seat of the skycar, Liara opens the elevator door. No scene showing who shot Ashley. The camera moved to the spot where a squadmate shoots Ashley, but no one was there. I was surprised. Never had that happen before
James & Liara - picked James first - same thing happened as above
James & Garrus - James picked first, Garrus makes comment about council when talking with Bailey, James in front seat of skycar, James opens elevator door. Garrus shoots Ashley
Garrus and James - Garrus picked first - same as above
edi & James - edi picked first, James asks about council when talking with Bailey, James in front seat of skycar, edi opens elevator door, edi shoots Ashley
Garrus & Liara - Liara picked first, Garrus asks Bailey about the council, Liara is in the front seat of the skycar, Liara opens the elevator door, Garrus shoots Ashley
the above is from the same playthrough. I just reloaded a prior save each time I did the mission.
Garrus & James - James shoots Kaidan. this was from another playthrough that I loaded just before the elevator scene
The 3 times Garrus shot Ashley, he was on Shepard's right when exiting the door. He walked behind Shepard in front of the other squadmate to shoot Ashley and just as she died, Garrus is seen back in the same spot before he moved.
If I was to load another character or start another playthrough, the results might be different.
It most likely be different had I recruited Javik.