What should the wife say to the judge if she finds her husband committing adultery in her bed and she has no witnesses?

If a woman sees her husband committing zina (fornication/adultery), she should advise him and conceal his act. If she wishes to bring the matter before the judiciary, she is required to provide proof through four upright male witnesses. If she accuses him of zina without proof, she incurs the punishment for qadhf (false accusation). She should not bring the matter before a judge unless there is proof. If she advises him and he does not repent, and she dislikes remaining with him, then she may seek talaq (divorce) or khul' (divorce at the wife's initiative, often involving compensation).