B, I think you are crying because you are finally accepting the fact that he's out there and may be gone for a while or even forever. The hard drive was the last material piece of him that you had and now that you are going to give the music hard drive to him, it's become a reality for you that he's gone.
As for the nick name, it's a habit and they don't even realize most of the time that they are saying it. I would take this action w/a grain of salt.
Keep focusing on you and your girls.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.
