The Importance of Repentance in the Shari'A

The Prophet sassam is confronting Aisha and he's telling her this is what the people are saying, I've heard about you. She responds back and she says to her mother ummir uman ya uma answer me on behalf of my father. This shows us repentance is the key to salvation any sin can be forgiven by repentance. The Quran is wahe from Allah subhanahu wa ta'ala why for one month no Quran has come down of our Aisha? Why drag the entire society and your wife and your mother and father through such a trial if they're innocent then Toba will forgive them all. We learn that even in this direct conversation there's no accusation