I also have experienced the name-calling thing. My mother, at times, ends up calling me by my brother's name. I think that is the hardest thing at times, because clearly she's not over it (he shot himself with her in the next room).
I really do feel for Noah. It's not something you ever truly get over (here I am posting about it 13 years on), just something you just got to learn to deal with. I found that for me, I had to find a healthy coping mechanism/hobby to get through those first few years. Life still goes on man.