That is the case, yes. My best friend, who is now out of whatever odd stage it is...tried to talk to my brother. They are good friends and she had hoped he would listen since she made some of the same mistakes...but alas, he wouldn't. He is just now coming out of this stage...So I understand why she wouldn't listen to you. You're almost too old to understand. She wants to do it all on her own.
If she's like my friend and my brother, expect this to last a while....both of them where in their low 20s before they woke up. Around 22 actually. It's gonna be a bumpy ride for you all for sure.