(((((Elysium))))),
I am so sorry that you had such a sad & triggering day. What a wonderful thing that you did this morning though with being able to make the 911 call & give them all the information you could about what you saw. I know waking up out of a deep sleep leaves me in sort of a daze for awhile & it's difficult to figure out that there is even a need to do something.....so taking the necessary action to handle the situation was a very good in spite of all the triggers involved.
I know how important it feels to be an involved neighbor. How lucky she was to have you as a neighbor & not someone who would ignore because they "don't want to get involved".
I am sorry that the police treated you in the gruff way they did. For some reason the police seem to have that trait as I have experienced similar treatment.
I am so sorry that you lost a staff member where you work. That on top of the trauma you experienced in the morning definitely had to make it a difficult day for you & I am sure you are emotionally drained at this point.
Try to be good to yourself & get a good night's sleep to give your mind some healing time after such a difficult day & hope you will be able to feel some level of relaxation & peace while emotionally recovering from such a difficult day.