I feel like I need to clarify something about Texas Towelie's

[haele]

7. It's okay. A steady presence has as much positive effect as a superhero.

Without a steady presence to act as an anchor against the chaos, others aren't able to collect themselves and go forward.
Being "there", with the ability to stay calm and focused on the process and optimal results is important and critical for others who depend on you.
You did well. That's a superpower in a world that is becoming faster and more reactive.
I'm sorry for your loss. But you being there made your brother's life better for him, and that's a hero's position.