Cobra\'s killing Cleopatra

[Jona Lendering]

Was the censorship that strong to omit this sort of factual evidence?

I think it was not censorship - but imagine Octavian had captured her. She would have been taken to Rome, would have been forced to walk in the triumphal entry, and it would have been impossible to execute her. A decent Roman simply did not kill a lady (cf. Aurelian's treatment of Zenobia, who spent her last years in the Villa of Hadrian in Tivoli).