What is the ruling on a woman forgetting to perform ghusl from janabah for a full day in Ramadan, if sexual intercourse occurred before the dawn (Fajr) adhan and she forgot to perform ghusl until sunset (Maghrib)?

If a fasting person becomes in a state of major ritual impurity (junub) due to a wet dream or intercourse—before Fajr—their fast is valid, as the Prophet (peace be upon him) would be overtaken by Fajr while he was in a state of ritual impurity, then he would perform ghusl and fast. One must hasten to perform ghusl to offer the prayers at their appointed times, for prayer is a grave matter, and neglecting it is dangerous. Whoever abandons the Asr prayer, their deeds are nullified. One must repent to Allah for abandoning prayer.