My mother is superstitious and always drinks fairy water soaked in incense ashes in the temple. Is this water harmful to her health?

It's superstitious to drink fairy water soaked in incense ashes in the temple. This is because practitioners are confused by the heresy of attaching Buddha and believe in evil. Buddhism is a causal method, which is to let everyone know good and evil, clarify cause and effect, break evil and cultivate good. The trick of seeking happiness with fairy water is to seek results without cause, which is a heretical method and is forbidden by Buddhism. All fortune-telling, geomantic omen, divination, praying to God and worshiping immortals, etc. It's heresy. Jaken can't get rid of evil. Practitioners who study Buddhism should establish correct knowledge and correct views and practice according to the causal method.