Are the Hajj expenses paid by the husband for his wife her right after her sister's travel plans to care for their child fell through and she requested a divorce, leading to the cancellation of her Hajj?

The expenses of the wife's Hajj are not obligatory upon the husband, unless he offers them voluntarily. It is advised to reconcile and not divorce, and that they perform Hajj together, and to seek relatives to care for the child, as divorce should only occur when all means of reconciliation have failed.