The guardian of this patient should be patient in seeking treatment from specialists in this field at hospitals. He should not rush things, for this may take quite a long time, depending on the severity of the illness. In addition, he should treat her using Shar`y (Islamically lawful) Ruqyah (reciting Qur'an and supplications over the sick seeking healing) by reciting some Ayahs (Qur'anic verses) and Surahs (Qur'anic chapter) over her such as Al-Fatihah, Al-Ikhlas, Al-Mu`awwidhatayn (Surahs Al-Falaq and Al-Nas) including Ayah Al-Kursy at bedtime. She should also recite Dhikr saying: (In the name of Allah with Whose name nothing can harm on earth or in heaven, and He is the All-Hearer, the All-Knower) three times in the morning and evening. She should protect herself by Allah's Perfect Words by saying: (I seek refuge in the Perfect Words of Allah from the evil of that which He has created). Her husband or any of her Mahrams (spouses or unmarriageable relatives) shall make Ruqyah using these Adhkar (pl. of Dhikr, Remembrance of Allah) and other authentic Adhkar reported from the Prophet (peace be upon him). You can find all this in the book entitled "Al-Kalim Al-Tayyib" by
Ibn Taymiyyah and "Al-Wabil Al-Sayyib" by
Ibn Al-Qayyim in addition to "Al-Adhkar" by
Al-Nawawy and "Zad Al-Ma`ad" by
by Ibn Al-Qayyim. They must also beware of
going to church or referring to any priest to exorcise (Part No. 25; Page No. 103) the claimed Satan out of her. A church is a place of worship for Christians and a priest is a Kafir (disbeliever). He would treat her with nothing but Shirk (associating others with Allah in His Divinity or worship) through incantations and Satanic spells that involve soothsaying and Shirk. Accordingly, a Muslim must shun this sin. Furthermore, they are to seek a cure from doctors and Shar`y Ruqyah that complies with the Qur'an and the Sunnah of the Prophet (peace be upon him), rather than such satanic shirk related incantations, and this indeed is sufficient.We ask Allah to grant her recovery and protect you and us from Fitan (temptation/trials/sedition). He (Glorified be He) is the One Who answers Du`a' (supplication).May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.