Taking the idea of "someone has to go through it to truly understand," I thought of the Angel of Death. What if she had to take the life of someone she was close to - someone she couldn't bear losing? Now, it would be different because this was someone who wasn't a stranger. All this time she'd taken her job for granted until it hit home.
Below are a few images from the concept. A big thank you to Brenna for digging deep and giving me the emotion of grief. I know that's a tough one to have to visit.