What is the ruling on a girl delaying prayer for days after purification from menstruation due to her inability to perform ghusl in her high school dormitory, and is it permissible for her to perform tayammum in this situation?

A Muslim is not permitted to abandon prayer under any circumstances, as it is among the gravest sins. A girl can perform ghusl (ritual bath) in any place where no one can see her, even if it is in a restroom by carrying water in bottles. If she is unable to perform ghusl, she should perform tayammum (dry ablution) and pray. Girls must fear Allah and perform ghusl when it is obligatory. They should also raise the matter with the school administration to provide a suitable place for ghusl.