I tried to tell her that it was a scam but she did not believe me.
How did you go about telling her it was a scam?
I went into a facebook group where there were many people having a similar experience as mine.
It's unfortunate she didn't believe you about the scam, but you did your best, it's good you tried to warn her about the situation. If we don't let people know about scams there will be more victims.
I do not care, I am glad she is being hurt
It just sounds like she made a mistake. You shouldn't be happy that someone got hurt.