When the Accuser momentarily wins

It is sobering to notice when a brother or sister falls prey to the temptations of the Accuser because he no longer just accuses, he becomes correct in his accusations. There's always forgiveness, but contrition on the part of the Christian needs to come first. My heart feels for a sister right now who doesn't know yet that she is about to prove the Accuser right. My heart aches for her, but hopes that she will see the Forgiver and return instead of driving herself away. Please make it so.