It's understandable that you might second guess yourself on a difficult topic such as this being in the position that you're in. As a second opinion, I can't find any fault with the way you did it. "Dying is easy. It’s living that’s hard." Amen to that. You did take the harder path of writing a real, actual story so you inherited the work that comes with it. The payoff is something pretty damn good imo so Maybe don't be too hard on yourself.