What should a woman do if her menstruation stops for one day and then returns; should she pray and fast during that day?

If a woman becomes pure from menstruation, she performs ghusl (definition) (ritual bath), prays, and fasts. If the blood returns before fifteen days, she stops praying, fasting, and engaging in intercourse. If the bleeding stops, she performs ghusl, prays, fasts, and intercourse becomes permissible for her. If the intermittent bleeding exceeds fifteen days, it is istihadah (definition) (non-menstrual vaginal bleeding). As for riding the center's car, there is no harm in it, provided there is no khalwah (private seclusion) with the driver.