Some kids in our (year 4) class have so many problems with presentation! The content is there but it's the way it's laid out, not systematic, questions 1,2 and 3 laid out going down the page, then 4 and 5 squished next to 3 on the same line - and that's if you're lucky and can work out which question it actually is as some of them rarely write the question number!
Whole double pages missed out, work done upside down at the back of the book as they have rushed and not checked where they are.
Find out the official school font, get her to write a line each of her favourite things (one of my dds would be 'unicorns', 'glitter', 'minecraft', 'milkshake', you get the picture!
Can you go out with her and let her choose a nice exercise book (paperchase/tiger, somewhere with cute designs, and something that she really is excited about using) and then get her to do some 'work' in it?
Do keep it light and fun though.
I put post it's in exercise books now, a general page marker sticking out of the book to indicate which page they should start on, and then a smaller sticky note at exactly the like they need to start today's work on.
I've bought some scented stickers for when they work hard on their presentation, it's important that it's legible and coherent!
Well done for trying to help her though this, it's so frustrating when the work is there and done well but to a poor standard, and often they need a little bit of scaffolding to get things in the right places.