Is a wife sinful if she refuses intercourse with her husband because she is angry with him and wants to reconcile with him first?

A wife must allow her husband access to herself whenever he requests it, unless there is a valid excuse such as illness or menstruation. This right is established upon the husband's payment of the immediate dowry, which is in exchange for her financial support. It is not permissible for her to refuse without a valid excuse, and anger is not considered an excuse. A man should, however, consider his wife's feelings and be gentle with her.