Such cases like cyber bullying are very common among centralized system, I also have been a victim, such act is bad, sometimes it is often used for blackmailing, i agree with the effect it could bring to such a person.

It is bad experience for your friend, the height of the threat is very much high, i believe as she as returned back to social media, she will be careful with her passwords and link she clicks on, because hacker can only get hold of our information from our carelessness.

Thanks for Sharing this piece
Greetings and blessings