Have tried a few things to get this going with no luck. I tried getting the key from Dr. Williams' corpse in the graveyard to maybe kick off the Passion Pills quest. No go. Tried hacking the terminal, again no go. Tried to pickpocket the journal from Nyoka but it's really effing hard not to get caught (came very close once, got her inventory open but was caught before I could take it, haven't been able to replicate it since). No guarantees it would even work though.
I know killing her and taking the journal will advance the quest but obviously you lose her as a companion, and people apparently have been able to continue just by going to Devil's Peak, again missing out on her as a companion. Neither of those options are acceptable to me.