Actually, this is the first I’ve heard about it but my God is it fascinating! I presume the female serial killer you refer to is Locusta:
Born around the first century C.E., Locusta grew up to become one of the preeminent poison masters in all of Rome. It is said that Empress Agrippina and Locusta conspired together to poison Claudius with a batch of poisoned mushrooms so that Agrippina’s son Nero could become the Emperor.After this Locusta came under Nero’s employ, helping to poison Britannicus, Claudius’s son by an earlier marriage. With Emperor Nero as one of her satisfied customers, Locusta enjoyed a growing reputation. The emperor lavished her with land, money, gifts, and a full pardon for all the poisonings she had been charged with over the years. There were many imperial referrals and more assignments. Locusta was very busy with her contract work in poisonings-for-hire, and even opened a school where she taught others her knowledge of herbs and toxins.
Locusta was riding high, until the Roman Senate decided to off Nero. It is said that Locusta had thoughtfully furnished Nero with a poison kit for himself when it was known that his end was near, but in the confusion of the moment, Nero left the kit behind. Before he could be brought before the Roman Senate to stand trial for his many “crimes,” Nero killed himself with his own dagger. However, this seems like a pleasant end when compared to Locusta’s own death. It is said that Locusta was publicly raped by a specially trained giraffe [some sources say llama], then torn apart by wild animals. [Source]
There doesn’t seem to be any doubt that this is true, and animals were commonly used as a method of execution in ancient Rome. As for women volunteering to have sex with animals, according the this website:
Bestiality was a common form of entertainment in the Roman arena - in the words of R. E. L. Masters in “The Prostitutes In Society”, mass bestiality, as public display in Rome, was “a phenomenon unique in all of history”. Beasts were specially trained to copulate with women: if the girls or women were unwilling then the animal would attempt rape. A surprising range of creatures was used for such purposes - bulls, giraffes, leopards, cheetahs, wild boar, zebras, stallions, jackasses, huge dogs, apes, etc. The beasts were taught how to copulate with a human being either via the vagina or via the anus. In the modern world occasional shows are staged where an animal copulates with a woman but there has never been anything comparable to what was seen in the Roman arena.
and certainly Roman civil law said nothing against bestiality.
History is absolutely bonkers sometimes! Thanks for sharing this with me!