Is the wife sinful if she and her children stop visiting her husband's family due to the demeaning way they treat her, which causes her psychological distress, or does "Allah not burden a soul beyond its scope"?

If you are harmed by visiting your husband's family, you are not obligated to visit them, nor are you sinful for refraining; for the Prophet, peace and blessings be upon him, said: "There shall be no harm nor reciprocating harm." However, you are not permitted to prevent your children from visiting them, for that entails severing ties of kinship. It is obligatory to raise children to maintain kinship ties and possess good character. Among the virtues of a wife's character is her kindness to her husband's family, overlooking their mistakes, and assisting him in honoring his parents and maintaining his kinship ties. This is something that will weigh heavily in the scales on the Day of Judgment and increases the husband's love and respect for his wife. Responding to evil with good brings affection, and Allah has urged us to do so even with enemies: "And not equal are the good deed and the bad. Repel [evil] with that which is better; then suddenly he to whom between you and him was enmity [will become] as though he was a devoted friend. But none is granted it except those who are patient, and none is granted it except one having a great portion [of good]." Forgiveness increases a servant in honor and dignity, and it is a means to attain Allah's pardon and forgiveness: "And let them pardon and overlook. Would you not like that Allah should forgive you? And Allah is Forgiving and Merciful."