As far as the child feeling that he killed his father (I don't know if this is first hand info or not, it was just mentioned above), alot of that can be worked through if the child gets professional help. SPECULATION -- Does the child feel that way because he wasn't able to do enough for his dad underwater? Does he feel he ascended too quickly with his father and contributed to a possible case of DCS (in which case the child could have succumbed to DCS himself)? Does the child feel he didn't get his father to the surface quick enough? We may never know why the child feels responsible. END SPECULATION
Depending on your child as a dive buddy isn't a sound practice. In fact, should you depend on anyone as a buddy? I believe you're not a good buddy until you're a self sufficient diver. On a recent dive trip I overheard a diver saying he was looking for a buddy on the night dive in case his light went out. But that's a discussion for another thread. A buddy should be backup, not a crutch.
Depending on your child as a dive buddy isn't a sound practice. In fact, should you depend on anyone as a buddy? I believe you're not a good buddy until you're a self sufficient diver. On a recent dive trip I overheard a diver saying he was looking for a buddy on the night dive in case his light went out. But that's a discussion for another thread. A buddy should be backup, not a crutch.