She was missing one exam, that of Latin.
But she hadn't told her parents to whom she, on the contrary, had announced the date of her degree in modern literature.
And so, the day before that long-awaited ceremony, maybe she couldn't bear the weight of her confession and she decided to kill herself, throwing herself off a cliff.
This is how a 27-year-old girl died in Somma Vesuviana, in the Neapolitan area.
According to what was reconstructed by the press, behind her gesture there would be precisely that exam not taken and a degree that she, at least for now, could not have achieved.
It was the father who raised the alarm for his disappearance.
The girl wasn't the type to disappear: her studies, her family, her boyfriend, a quiet life, her parent immediately said.
He had called her late Monday morning, the day before the announced graduation.
The mobile phone was not reachable but then she had sent a whastapp message saying that she would have to go to the library, to collect the thesis, and that she would return to Somma Vesuviana with the 4 pm train from Naples. But, perhaps, there is no Naples she never even went, the university cameras never picked her up that day.
The father, that day, insisted.
He also wrote in a university chat to ask if anyone had seen her.
Diana sent him another text, "can't talk."
Then nothing.
Just her black purse, next to a railing.
His body was found on a cliff near a former restaurant in Somma Vesuviana.
She was a course friend, in a chat, who said to her: "She had said that she was going to collect her thesis, but she hadn't graduated yet".
From there the investigations of the carabinieri and the suspicion that behind her suicide there was that long-awaited but still distant degree.