Reading and blowing on a person as a form of treatment

I have a relative who has been told that she may be affected by Jinn. Recently she's been feeling unwell and having nightmares repeatedly having a dream seeing the same person. She has been married for 5 years without any children. She has also noticed her skin has become acne prone and scarred. Although all this could be just a bad phase in her life, she has been told by someone that it's the the effects of a jinn.

The person has asked her to bring a piece of clothing she has worn for a few days so he can blow ayats from the Quran on to it to see the effect that has on the clothing. She is a practicing Muslim and does not want to do anything that compromises her religion or anything that involves shirk and displeasing Allah Ta'ala. Please shed some light on this practice.