Short answers, pulled from the story.
Roman historian Livy and Greco-Roman historian Dionysius of Halicarnassus wrote about her approximately five hundred years after she supposedly lived. These accounts form the only surviving evidence regarding her existence, the rape by Sextus Tarquinius, and her subsequent suicide.
Dionysius of Halicarnassus sets this year at the beginning of the sixty-eighth Olympiad around 508 BC. The event took place during a military errand when Sextus Tarquinius arrived at Collatia.
Brutus grasped the bloody dagger and swore by Mars that he would overthrow the dominion of the Tarquins. He passed the dagger around so each mourner swore the same oath before transforming the crowd into an authoritative legislative assembly.
Livy's account in Ab Urbe Condita Libri from 25 to 8 BC serves as the earliest surviving full historical treatment. Ovid recounted the story in Book II of his Fasti published in 8 AD concentrating on Tarquin's bold over-reaching character.
Since the Renaissance, artists like Titian, Rembrandt, Dürer, Raphael, Botticelli, and Artemisia Gentileschi have depicted Lucretia's suicide. Hendrick Goltzius produced a series of four engravings including a banquet scene alongside spinning Lucretia.