Dear, do they have to know what from? As long as they know why you might have a difficult time now and then, then what else has happened is not their business until you decide it is.
You are not inadequate. You are alive. You are functioning. You are also trying to deal with what most people can't even dream of encountering in their lives, and all of this at once. Dear silent. It sunds like you think you owe them the whole story. You certainly do not owe them anything. An explanation is nice, but you do not owe them anything, certainly nothing you are not comfortable with.
Many safe and warm HHUUUUGGGGSSS.