<human>: Can you give me the gist of the text in a nutshell?

So I know this girl for a Month now but our contact and interest in each other has grown with every time we meet up.
Let's call her Sophie.

She is a very attractive girl but also naïeve and that is a dangerous combination. Recently, for the last 4 months, she joined a friendsgroup with a lot of guys and some girls. All of them use drugs and now Sophie does so too. 

Last Saturday, Sophie asked me to come to a big event and I told her I'd come. While at the event, I suddenly found her in a terrible state. She was helped by some other ladies she didn't know and we really had to make sure she didn't pass out. (She was given MDMA)

This is all very weird, because Sophie told me she used to be a quiet introvert kind of person and she doesn't really like the group when sober. But she always just wanted to be in a group, so she kind of deals with it.

I really don't know what to do, or how to help her, or even if I should help her. I only know her for a month but we really think equally about so much in life. Last weekend, while she was given drugs, she constantly asked me if I would stay with her that night. And a bit later on we were asked if we were a couple and she smiled and nodded yes.

That all felt so good, but what to make out of that friend group that has a bad influece on her?
Any advice would be lovely.
<bot>: me and 'Sophie' like eachother, but she has a friend group with a lot of people who use drugs and they have a bad influece on her. What should I do?