I have tears in my eyes reading your story. I was at the hospital the night my mom died and they kept giving her morphine for her suffering but not enough to kill her, they walk a fine line with that stuff. As difficult as it is, I'm glad you were there for your brother, I can't bare the thought of someone going through that without a family member at their side. It does change a person, to see a loved one suffer so much. :'(
I dream about my mom occasionally, I tell her oh Mom, I thought you died and I hug her and hug her. She just hugs me back, doesn't really say anything, she is smiling. I look forward to seeing her in heaven.
If you'd like to PM the visions to me of that night, I'd love to hear it.