Teenage girl exclude herself from me, her dad, siblings and doesn’t have friends

[Lovemychild2003]

What do I do with a teenager, she used to be so sociable and such a good kid when she was younger.
Help, any clues on what to do. I think she’s lonely but she won’t try socialising and is the opposite of how she was like when she was younger. Now she’s usually dazed and listens mainly sad songs.
Mental problem? Socially awkward? Lonely? Sad? Or introvert?

Please help, I’m desperate.

That must be so hard. Are you able to ask her if she’s feeling depressed?

There’s a really good teenage section on MN. It might be worth asking MNHQ to move your thread over there