Is the wife's leaving the home without her husband's knowledge, or the husband's not waking his wife for Fajr prayer, considered a sin?

Dignity (Karamah) is the act of delivering something precious to the honored one (Mukram). Arrogance (Kibriya') is the act of rising above submission, and it belongs to Allah Almighty alone. Among the differences between them is that the arrogant person rejects the truth and disdains people, unlike the one who possesses dignity. You must repent for what happened and seek forgiveness from your husband. It is not permissible for a woman to leave her husband's house without his permission except in case of necessity. As for a man entering a female neighbor's house, it is permissible if the privacy is removed and modesty and decorum are observed; otherwise, it is not permissible.