Have faith in God, do not be anxious over your family's salvation. When you pray for them, then leave them in the Lord's hands. The Holy Spirit needs to speak to their hearts and draw them. Be patience, love them with Christian love.
For we walk by faith, not by sight.
2 Corinthians 5:7
Believe on the Lord Jesus Christ, and you shall be saved, and your house.
Acts 16:31