Lawyer Abderrahim Lahlali says that the faith healer was called in to deal with "psychological problems".
Newspaper reports suggest that the woman had a lesbian orientation.
The lawyer claims that the healer read from the Koran at the family's home on several occasions:" At no point did he perform any act of extortionism."
Mr Lahlali says that the Koranic reader has nothing to hide and went to the police station of his own accord.
The dead woman's parents do not face any charges at the moment. Judicial police staged a short reconstruction at the home of the deceased on Monday.