Is it obligatory to make up the missed prayers due to the inability to perform ghusl immediately after the cessation of menstruation because hot water was unavailable, and how are they to be made up – before or after the present obligatory prayer?

If a woman becomes pure from menstruation but finds no water for ghusl (definition), or the water is cold and she cannot use it for fear of illness, and she cannot find water to heat, then she should perform tayammum (definition) and pray, without delaying the prayer. If someone does not perform tayammum and prays until the time for the prayer expires, she must repent and make up the prayer immediately. She should not wait for a similar time, but rather perform the missed prayers immediately to the best of her ability. There is a detailed explanation regarding whether to prioritize making up missed prayers over current prayers or vice versa.