Tbh if she won't put the graft in is she suited to uni at all?
My dd has just started, she's a fairly studious and academically able person and even she felt overwhelmed when presented with the reading lists.
Uni isn't the doss people used to think it was, it requires work! If students don't make the effort they can fairly quickly lose their place these days there are attendance and minimum achievement requirements etc
Unis are very much operating as businesses now and they don't want lazy/unengaged students pulling their stats down
All that said as per pps there's a limit to what you can do to change her mindset. You can advise, you can guide...
But if she doesn't step up and do the work none of that will matter.
In addition not all 18 year olds are ready for uni, for various reasons people may choose to take some time out of education and return to it at a later date and lots of unis/lecturers say older/more mature students tend to apply themselves better
I didn't go to uni until my mid 20's as I didn't have the financial support to do so in reality -but did on paper until I could prove myself independent from my parents. I also went in my 30's to career change and had a very different approach to the younger students
Dd is 20 and has had a couple of years out working full time as she wasn't sure what she wanted to do plus she felt she needed a break from education for a bit. But she's got a place at a very good uni as she has the ability and has proven in other ways she can do the work.
I have just been discussing similar with dd as she commented at one of her ice breakers another student mentioned having no particular interest in their subject and thinking they may have made a mistake, I had someone on my 2nd course complain about all the reading that was required - on an English course! 
But then there's also course switching and clearing which can shake things out.
A fellow student of mine started at a different uni doing a business based course that they thought they'd enjoy and be good at and they hated it! They didn't settle at the first uni either which was a good uni but one of the very big campus ones. They moved to our uni which was one of the newer (not ex poly though) and smaller more friendly campus ones.
Everyone's different
I'm seeing it with friends kids too. One went to her "local" uni as she thought she'd struggle with homesickness but has since had a change of heart and is now at the other end of the country studying the same subject but different uni so slightly different course content too and she's liking it there much more