Some of the people who have been the most embittered toward Christianity and have given me the hardest time gradually were softened and were saved. Praise God, one was my husband. Another was my daughter in law's mother, who was also into new age junk. She was a mocker as well. But some like may father in law probably remained embittered till his death. We never know who God will bring to salvation. Our job is to love them as they are, pray for them and witness to them by dropping seeds here and there and being a friend to them, expecting nothing in return. "There but for the grace of God go I". We grieve for those who reject Christ but must respect their choice.
But this is not being someone who is hoping for their approval or is doing so out of their own need for affection. This is being done out of Godly compassionate love, hoping that they will come to repentance but not expecting any appreciation or regard from them.