Yes, that’s correct. (See, I finished it!)
Which, I agree, makes me confused about the whole plot to begin with. Why was Rossi warned off? Why did everyone who got involved have serious collateral damage in their lives? And why so many roadblocks on the research path? Were those just tests of dedication and scholarship?
As for Rossi and the drink in Greece, here is my take on it. For whatever reason, Dracula and his minions seem to want to stymie Rossi’s research. In Rossi’s letter, he mentions going out, and someone giving him a drink called “amnesia,” and waking up with a wicked hangover. I assume a minion actually dosed him with something to induce amnesia about his research in Romania, and on serving it, sardonically called the drink what it really was, knowing that it would be taken as merely a colorful metaphoric name. Maybe that last part is a bit of a stretch, but it needed to be there so Paul could realize what had happened.
BTW, on page 560, you find out that Rossi is in the sarcophagus in the churchThe amnesia discussion occurs a few pages later, IIRC.
The narrator says she was named after her grandmother - did we ever find out her first name, or just that her last name was Getzi?
liirogue, my impression of Helen’s actions was that she didn’t try to commit suicide per se, but was overwhelmed by Dracula’s will, and that caused her to jump. Then she left because it was the culmination of her worries about his control over her.
That said, I think the ending was somewhat weak, and the climax was rushed. But it was still a satisfying book on the whole.