You misconstrued my post, so I'll say it again another way because I think the point needs to be made.
I don't agree with attacks on the family when they - the victims of a brutal evil act - respond in a different way than bystanders want them to. Human reactions and response to tragedy, and how to cope with it, is a very personal thing, and to imply they MUST respond to the realities of an evil tragedy and work through it in this way or that of OUR choosing, or the way we or our friends once did, is not fair, and imo a needless criticism on that family dealing with a tragedy.
I also will say, without meaning to preach or criticize anyone else's view, that I believe the family is responding from a Biblical approach to dealing with life's tragedies, and because I share their Biblical view, perhaps I understand it and accept it when others do not. Christians are commanded not to live in fear, but rather in faith, even though they too suffer tragedies. The fact that God commands such an approach tells me that living without fear, but rather with faith, is certainly an option for the Christ-follower. In 2 Timothy we are told that "God gives us a spirit that is not of fear but of power and love and self-control" and Psalm 23 says that "even though I walk through the valley of the shadow of death, I will fear no evil, because God is with me" and all through the Bible it tells us to live in faith (which is the opposite of fear), and the fact this family is choosing not to act in ways of fear is imo a testament to their faith rather than something to criticize.
To be clear, my point about your friend (as well as you, from your later post) is not that your friend was overreacting, but rather that you accepted whatever happened anecdotally in their life (and yours) as the model that MB's family must adopt, perhaps without ever allowing for the idea that there may be a different and perhaps even better way for MB's family to respond. You shared that all of you lived in fear of that event recurring with you (a medical anomaly that in no way truly threatened any of you). Perhaps MB's family is looking for (and maybe even has found) a better way.
Again, I am not trying to attack you or your friend, but rather to say that MB's family's choices don't have to be the same ones you guys had in order to be accepted. IMO I think it's imperative we allow them to cope in whatever way they believe is best for them, and we should hope and pray that they DON'T have to live with irrational fears haunting them as a result of what happened to MB. Without meaning to attack you or yours, I do support that family.