How can one calm the soul and purify the heart from the malice and distress resulting from my mother-in-law's continuous harm, and what advice is there for dealing with her to avoid her abuse?

To deal with problems between a wife and her husband’s mother, the following is advised:

1. Supplicate for the purification of the heart from malice and rancor, and supplicate for the rectitude of the husband’s mother.

2. Realize that this world is a place of trial and find solace in patience, recalling the virtue of a sound heart, forgiveness, and overlooking faults.

3. Maintain a good relationship with the husband and do not allow problems to ruin it.

4. Work to remove the causes of tension, such as requesting independent housing if the wife lives with the husband's family, or seeking housing far from them.