What are the obligatory prayers that must be performed if a woman experiences the sign of purity (cessation of menstruation) at the time of 'Asr, but delays performing ghusl until Maghrib due to a water cutoff?

If a woman experiences purity (cessation of menstruation) but does not find water for ghusl (definition) (ritual bath), she must perform tayammum (definition) (dry ablution) to pray before the prayer's time expires. She is obligated to purchase water if it is available at its normal price or with a slight increase. If she delays the ghusl until after Maghrib, having become pure during the Asr time, she must make up the Dhuhr and Asr prayers along with Maghrib, because the time for the second prayer (Asr) is also the time for the first (Dhuhr) when there is an excuse.