Should one continue to advise a girl who does not care about religion and shows hostility towards Islam and Muslims, or should she be left alone?

"Abandoning prayer, unveiling (tabarruj), and taking disbelievers as allies or marrying them are heinous prohibitions. Some scholars are of the opinion that abandoning prayer is an act of disbelief (kufr). Efforts must be made to guide this girl and prevent her from marrying a disbeliever. The questioner should be careful in dealing with her and strive to guide her through righteous women, gifting her beneficial books and tapes, and sending her useful articles while making her believe that the sender is female. He should also supplicate extensively for her guidance and contact her guardians to alert them against her marrying a disbeliever, emphasizing the obligation to protect her from Hellfire by educating her and raising her according to the religion."