Suggestions to make the prospect of leaving school less appealing:

1. She has to start paying rent and board.
2. Rent and board does not cover clothes, personal hygene products, make-up, shampoo, etc, etc, etc (all the things normal working people have to supply for themselves), public transport.
3. There is no financial subsidisation from Mum, dad, step parent or whatever.

Other than these suggestions I really can't offer much... Personally I loved school (well the learning aprt not so much the social part) and would have spent the rest of my life at some sort of learning institution or other if I hadn't had to support myself.

I know the suggestions I have put down are pretty harsh but then again so is the reality of adult life.

Wishing you and your daughter the best of luck with whatever decisions you make regarding this. Just make sure you always remind her that it is never too late to go back to study.