A friend of mine told me of a faith healing that didn't work in their church. She said they obviously didn't have enough faith.
Faith healing is a controversial topic in the Christian world.
The official view of the Roman Catholic church is that miraculous healings do take place regularly. In scripture, we find the Bible has multiple accounts of people being healed based on one person's faith or another. In this miracle the faith of the recipients is what counts. There are examples here as well. In Luke 8 we read of Jairus and his daughter.