If you uncover the secret of Dawn Star being Master Li's daughter and have her with you for the final confrontation, she tries to appeal to him either out of hope or to distraught him , only for him to be indifferent about their connection.
Then Shepard and the team leave, evacuating the female survivors.
In a later episode, his mother Darla's ghost appears to him and tries to stop him from murdering an innocent, but he rejects her, too.
Things reach a boiling point when the rapist attacks another woman, and Edith refuses to identify him as the man in her own case, which would put him away for good.
While enforcing for that day, he would always give in the next day.