Black Magic (Jaadoo) and Jinn

Pious people being protected from evil influences of shaitaan

Q: Mostly it is said that pious people (regular in prayer or other activities) are not mostly inflicted by spiritual diseases like magic/jinn possession/evil eye etc. rather sinful people are prone to these. But some ruqya experts say that pious people are more prone to these issues as Shaytan attacks more on them than sinful people and also Allah also tests them more than sinful people. Which explanation is more correct?

Using black magic to stop black magic

Q: My sister has come to know that black magic is being used to disturb and destroy her house. Her husband beats her everyday, threatens her that he’ll divorce her. He is also involved in extramarital affairs. This has been going on for the last 2 years. My sister reads Surah Baqara daily, offers 5 times prayers, and sincerely prays to Allah for relief but she has been in severe pain due to her husband’s attitude towards her. Recently she has come to know that somebody in her family is using black magic against her to destroy her relationship with her husband.

Somebody referred my sister to a guy who can destroy the black magic by using black magic. He claims that she’ll live a happy life with her husband once he is done with his magic. My sister has given him money to use black magic knowledge to destroy the black magic which is being done on her. Now my questions are:

1. What is the Shariah ruling on somebody using black magic to stop black magic?

2. Has my sister committed kufr?

3. Has my sister committed shirk?

4. If she has committed shirk by this way, is there anyway she could be forgiven by Allah?

5. Can she still go to heaven? She has been a pious woman all her life before this.