Me too. It would be interesting to see what led him to this conclusion. With her half sister and the supposed heroin problem she had, and the speed in the jar etc. at Spahn's it leads me to question whether or not there were alot of different drugs that were not mentioned floating around. And the paranoid delusions of a speed freak are not a pretty nor a good thing. According to Dr. David Smith of the Free Clinic speed was taking over the Haight and causing alot of problems...
also remember that krenwinkel lost a lot of weight as a teenager on diet pills and diet pills are speed. i know that's a long way to heroin, but it appears she was open to trying other drugs and i would think she would have tried heroin at least because of her sister being addicted to it.