Jeff, a couple of observations, if I may:
Solomon's observation: Proverbs 15:29
The LORD is far from the wicked: but he heareth the prayer of the righteous.
James' observation: James 5:16
Confess your faults one to another, and pray one for another, that ye may be healed. The effectual fervent prayer of a righteous man availeth much.
There has been, to a significant degree, some assumptions of researchers based on nothing but prayer, that tends to detract from what can be accomplished. I don't emphasize the power of prayers as much as I emphasize the power of the one that chooses to listen to them.
May you, and your friends, continue to be counted worthy of the ear of the one that has the power.
This round has been given to you. Keep fighting; life's fight has many rounds.