@Nancy
1 John 5:14-15 This is the confidence we have in approaching God: that if we ask anything according to his will, he hears us. 15And if we know that he hears us-whatever we ask-we know that we have what we asked of him.
Since you state it is the will of God for all to be saved, when you pray for someone to have God bring them to repentance and they never repent, how do you reason with that in light of the scripture above? If it was God's will then it would have to happen. The hard reality is that there are things that we desire that are not in His will.