Nope. When I first checked the 1970 Nasson Yearbook I checked for Annette Appollo. Not there. However, when I read a post by her sister I checked for Porter. There it was, Annette Appollo Porter. This would have to be some elaborate hoax spanning almost forty years.
It is all quite interesting - but regardless, dead, not dead, existed, never existed - it doesn't matter. TLaB,OLL,AA whatever has chose to depart -either in reality or just on the intertubes. Speculation on our part will never be any more than that. Speculation