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.
First of all, may Allaah reward you for being keen to be a pious wife and to fulfill your duties towards your husband and your home.
If what you mentioned about your husband is true that he mistreats you and spies on you and the like, then he is having bad marital relationship with you because a wife has the right on her husband to treat her in kindness as Allaah has commanded in His Book. For more benefit, please refer to Fataawa 86618 and 88304.
In principle, he should assume your innocence, as he is not permitted to suspect you without evidence. However, we advise you to avoid anything that may cause suspicion.
Moreover, he is obliged to offer you a separate accommodation as this is a right of the wife upon her husband; for more benefit, please refer to Fatwa 84608.
Also, he is obliged to spend on you according to reasonable grounds, as this is also your right on him as we clarified in Fatwa 89170.
Besides, we advise you to be patient as the result of patience is good, Allaah willing; for more benefit on the excellence of patience, please refer to Fatwa 85445.
Furthermore, you should admonish your husband in a soft and gentle manner in the light of what we mentioned above. It is also permissible to seek the help of rational people if necessary and if agreement takes place, then this is what is required, otherwise you may take the matter to one of the Islamic Centers so that they would repel the harm off you either by divorce or Khul’.
Finally, it should be mentioned that good relationships should prevail between the in-laws, so that respect would prevail between the husband and the family of his wife and between the wife and the family of her husband, as this is one of the means of achieving family stability and attaining happiness.
Allaah Knows best.