It is possible to come up with an infinite number of possibilities and questions. But there are easy potential answers to your questions.
Herrick had access to the house once he entered. He could have turned off lights. We do not know that the window he entered was the same window he shot Adams through, nor do we know the lights to the door area were the same as the lights in the front room or living room. In the article, it states that Herrick shot the lock in the front door, disabling it. It would be reasonable to assume that having failed to gain access via the door, he shot out a window alongside the door to gain access. He shot multiple times downstairs before he was stopped at the master bedroom door.
While not definitive, Adams was the one shot in the head. If Herrick was not aiming at him, we have no way of knowing otherwise.
As stated above, there is no reason to believe the window that Adams was shot through was the window Herrick entered or that Brendon used to exit.
It is not unreasonable for someone in the bathroom in a master bedroom to be able to see the entrance door to the bedroom. It could be an excellent defensive position to defend against an intruder. It serves as both cover and concealment.
You’re missing my point: These unanswered questions could easily have gone against Pebbles. There are unexplained inconsistencies. However, based upon what we know, I presume that either the DA knows something or a GJ has looked at it.
Hard to dispute a good outcome, but you never addressed Pebbles’ inconsistency on knowing the guy.
Favored outcome or not, I don’t like unanswered questions.