Is the fast of a girl who read romantic stories and felt that which necessitates ghusl (ritual purification) before Fajr valid, and is her ghusl like the ghusl of menstruation?

Stories that incite lust and invite to forbidden love are not permissible to read. One must refrain from reading them and instead engage in beneficial activities such as reading the Qur'an, performing dhikr, and reading useful books. If semen is discharged due to arousal, ghusl (definition) (ritual bath) becomes obligatory. This is called ihtilam (wet dream) if it occurs during sleep. If this happened before Fajr and your fast is valid, because a person in a state of janabah (definition) (major ritual impurity) can validly fast, as it has been authentically reported from the Prophet, may Allah bless him and grant him peace.