If God has worked in your life in some powerful way or you know someone who has been changed through the power of God, then witness that to this person…
Tell them the story, tell them that you are praying for their full recovery. Keep in regular contact with them, so they believe and realize that you have not abandoned them…and that God works through people to help others.
It’s like the story of the guy who was in a flood and is sitting on the roof of his house. He prays to God to be rescued.
Here comes a person in a life raft, but the man refuses to leave. Here comes another person in a boat, but the man refuses to leave,
Here comes a rescue helicopter but the man refuses to leave.
Finally the water covers the house and he drowns.
He gets to the gates of heaven, and he says to God, how come you did not come to rescue me.
And God replies, I did come…I sent a raft, a boat and a helicopter but you did not respond to any of these efforts to help you.
God reaches out to us, you still have to reach out and take his hand for his power to work through your life.
Invite this person to come with you to adoration and just sit for one hour before the Blessed Sacrament together.
Hopefully, just this act alone, things will change, if they are just willing to try.
With all things, pray, pray and pray some more.
God bless you.