What is the ruling of Islam regarding a wife who eats in front of her sick co-wife, who is unable to prepare food, knowing that the sick co-wife used to help in raising and serving the children when she was in good health?

Islam brought forth acts of worship and transactions, and commanded noble virtues such as generosity, altruism, kindness to creation, and good neighborliness, while forbidding harm to neighbors. A Muslim must overcome the impulses of the evil self, such as envy and malice, and must adorn themselves with noble character, even with enemies. The sick and helpless sister should be patient and pray for her sister's guidance.