What is the ruling on the fast of a girl who was messaging a young man and arousing her desires with messages, leading to a discharge, then she delays her ghusl until the daytime in Ramadan?

A woman's fast is valid if she experiences a nocturnal emission (janabah) at night, and delaying the ritual bath (ghusl) until morning does not invalidate it. This is confirmed in the Two Sahihs (Bukhari and Muslim) that the Prophet, peace and blessings be upon him, would wake up in a state of janabah due to intercourse and then perform ghusl and fast. One who is unsure whether the discharge is semen (mani) or pre-seminal fluid (madhi) has the choice to consider it semen and perform ghusl, or consider it pre-seminal fluid and simply purify oneself from it. The emission of semen during the daytime in Ramadan due to thinking does not invalidate the fast. We advise the woman to fear Allah, to not continue engaging with the messages of the wicked person, and to immediately cut off the relationship with him.