15 year old DD smoking and risk-taking - please help

[Firefliess]

DD is 15 (Y11) and I'm really struggling with her right now. She's taken up vaping, lies to me and is being generally challenging.

This evening a stranger has just called round to tell me that about 4pm today he was walking past and saw two girls up on our roof and his children were frightened they would fall. DD has an attic bedroom with sloppy windows that you can climb out of and had a friend round when I got home earlier. I caught her doing it once before (via her posting a photo of it on Instagram!) but thought she had more sense now.

I've confiscated her vape and the liquid she had for it which she claimed was nicotine free, but wasn't. But I can't stop her buying another one.

She's out currently and due back in an hour or two and I don't know how to handle her. I work so can't easily be here at all times to police her, but wondering whether I should ask for some flex at work so that I can be? Or make her come to my workplace after school to sit there and do homework? Take her keys off her if she can't be trusted to be home alone? But I don't really want her wondering the streets getting into more trouble. Just feel she's getting out of control and I don't know how to handle it. She can be lovely at times and we still mostly have a good relationship, she likes to talk to me about many things, but then does such stupid things.

Please give me some ideas. I have an older DS but he's always been so easy, never challenging like this.

Hi Fire, just saw this now and didn't want to read and run. I don't have any advice for you because I have a teenager who has me in constant high alert. It's so hard trying to find the right thing to do, you can feel so helpless and alone in this. I just wanted you to know that you are not alone. I hope things have gone well for you over the past week!

Thanks markingplace. I was feeling particularly anxious when I wrote that last week. I was pretty cross with her when she got in and have told her she's not to have friends round when I'm not in. Or to have that particular friend round at all. She's been fairly good the last few days but I found (and confiscated) tobacco and a small amount of cannabis from her at the weekend. It is really tough as I really don't want things to completely blow up as I'm not sure I'd be able to control her, but some of what she does is not ok. It's not an easy age is it?