Henny, condolances with your loss. I hope Rotorblast has the decency to apologize for his insinuations.
When you say that you've gone through all the scenarios, does that mean that you did that with the authorities, with access to radio/radar tapes and so on? In other words: do you have access to more information than what's available to us here on PPRuNe?
You must understand that the folks here have a natural tendency to discuss accidents like this, if only to learn from them and to prevent making the same mistakes (or being overwhelmed by the same circumstances) ourselves. So any facts that you can contribute will be highly valued here.
On the other hand, I can perfectly understand that at this time you would not be willing to join an in-depth discussion about your brothers death with a bunch of total strangers.
In any case, thank you for posting. It's a reminder that after such an accident, it's not just fellow pilots that are looking for answers, but family too.