All perfect praise be to Allaah, The Lord of the Worlds. I testify that there is none worthy of worship except Allaah, and that Muhammad is His slave and Messenger.
It is not acceptable to divorce your wife just because her family practise magic or visit magicians or go to those who help them in magic. What is important is to what extent your wife is religious and has good moral conduct. Indeed, both practising magic and visiting the graves of pious people in order to seek their help are a great evil as this is Shirk [associating partners with Allaah]. But it is not permissible to accuse someone about this without evidence.
Besides, if your wife went out of home without your permission while having a sound reason for doing so, like fearing a specific harm that may befall her, or in order to ask for a separate accommodation, then she is not considered disobedient by doing so. However, if this was without a sound reason, then she is disobedient. Islam has clarified the steps of dealing with a disobedient wife and this is clarified in Fatwa 85402.
Moreover, her revealing her marital secrets to others is an evil matter and if these secrets are related to sexual intercourse, then this is even more prohibited. Abu Sa'eed Al-Khudri narrated that the Prophet said: “The most evil of men in the sight of Allaah on the Day of Resurrection, is the one who has sexual intercourse with his wife and she has sexual intercourse with him and then he discloses her secret.” [Muslim]
Furthermore, the matter is as we mentioned to you that your wife has a right to a separate accommodation because she is not obliged to dwell with your parents even if your parents need you. You should give each of your parents and your wife his/her right. You may allocate part of the family house for your wife with its separate amenities or provide her with a house near them, either by building it or by renting it so that you may be close to your parents; for more benefit, please refer to Fatwa 84608. Also, you are not religiously obliged to go to your wife’s family to dwell with them in their house.
On the other hand, if you are pretty sure that your wife is sincere in her repentance and in her wish to come back to you, then you should keep her in kindness and you are not obliged to obey your mother in not bringing her back. A son is not obliged to obey his mother if she asks him to divorce his wife without a sound reason. However, if you predominantly think that she is not sincere in her repentance, and you fear that the problems will happen again and dissension will take place, then you are obliged to obey your mother and divorce your wife especially that you did not have children with her because this is easier than divorcing her after having children.
Finally, the two following matters should be mentioned:
Allaah Knows best.