So as head of family, have you help her to resolve her tiredness, busy (with what?) and stress at work? Or simply bochup and expect her to settle herself?
Your family is probably only people that stay with you for the rest of your life, if you don't care enough about them, don't expect them to care much about you. Might as well cut your family off if you no longer have feeling for them
tl:dr - Don't cheat and take care of your family like a real family head, or be a real man just bite the bullet and get WC'd