Playing up in Vi Form

[Helpyourself]

DD1 still has a them and us attitude re her studies and behaviour.
I've just come back from a specially convened meeting with her head of year and subject tutors. They like her, but she's sailing close to the wind discipline-wise. They could kick her out.
Background is that she is her second chance at sixth form. The first time was a disaster not entirely of her own making; wrong subject choices and 'not for her' ethos (very sink or swim, poor pastoral care, poor teaching).
She's now at a small sixth form with excellent teachers who she likes and is risking it all with scrappy homework, rudeness, lateness, gum chewing, leaving books at home. All 'don't sweat the little stuff' which is building up to a dossier which is jeopardizing her place.
She's happy and likes her friends studies and teachers; how can I help her see that she's the only one who can change this? She's 17 and neither of us have the stomach for me standing over while she does her homework/ check she has packed her school bag.
Any advice?

Does she know what she wants to do career wise?
If so, get the details of qualifications/grades needed for employment/course, show them to get and ask how she intends to reach her goal.

If she doesn't know, she needs to start thinking about it. Finding what motivates her using it as a carrot is key.

Thanks circular.
She has a very general idea, and that's fine; I agree we can look at jobs and courses and work back from there.