Is the husband the cause of his wife's entry into Paradise, knowing that she obeys him greatly but does not contribute to household expenses, and both of them work as teachers?

A wife's obedience to her husband and her good devotion to him are a cause for her entry into Paradise, due to the Prophet's (peace and blessings of Allah be upon him) saying: "If a woman prays her five [daily prayers], guards her chastity, and obeys her husband, she will enter Paradise from any of its gates she wishes." A wife is not obliged to help her husband with expenses, unless she volunteers to do so willingly, or if the husband stipulates that she give him a certain amount of her money in exchange for his permission for her to work.