what happens at justines trial?

Though few witnesses are willing to come forth to aver Justine's innocence, Elizabeth insists on speaking on the girl's behalf. She praises Justine's character, and says that she was beloved by the entire Frankenstein family; Elizabeth, for he part, will never believe that Justine is guilty. Despite this brave display of loyalty, Justine is condemned to death. Victor considers Justine's plight to be less than his own ­ she is consoled by the fact of her own blamelessness, while he must live with his guilt.

Shockingly, Justine confesses to the murder, and expresses a wish to see Elizabeth, who asks Victor to accompany her. Justine tells them that she confessed to a lie in order to obtain absolution and avoid excommunication in her last moments. She does not fear death, and nobly spends her last moments in comforting Elizabeth and Victor. This only serves to heighten Victor's anguish, and he reflects that Justine and William are the first victims of his "unhallowed arts."