What is the ruling regarding a girl who utters obscene language with her friends and backbites people, then repents and seeks forgiveness?

The aforementioned speech does not cause the girl to sin, but backbiting people and scorning them is forbidden, and she must be advised to repent, and it must be clarified that sins are a cause of a bad end and the eradication of the blessing of acts of obedience, and that a servant must remain fearful of his Lord. She should be guided to read Ibn al-Qayyim's chapter in his book "Ad-Dāʾ wa ad-Dawāʾ" (The Disease and the Cure) about the effects of sins and transgressions. Her fate after repentance or its absence is under the will of Allah.