Private
No, I highly doubt one of your parents killed the other, but it's good to be prepared. If you're just going to ask them for a reason and not have them share a part of your life, then it's only fair that you not try to influence the lives that they have now in return.
Probably. Especially if he thinks it'll make me angry.
Speaking of the future, what are you doing between now and sometime tomorrow? Does Shepard have you on any assignments?