Is a person punished for not communicating with and for shunning someone who causes them psychological harm and incites against them, such as a stepmother who wishes ill upon her husband's children, especially after 15 years of confirming her intentions and her destructive impact on the husband?

The father's wife is not a kin with whom maintaining ties is obligatory. Keeping distance from her is better if it brings peace of mind, wards off harm, and reduces animosity. However, it is preferable to be patient and continue maintaining ties with her, because it is a way of repelling evil with good, and it pleases the father, as long as no harm results from communicating with her.