Hi NAB, I can hear the frustration in each of your posts, but I still don't really see what the problem is. Your dd is obviously a good reader, she gets 2 books per week from school, plus other library books. Please could you explain to me what you think she is going to gain by bringing home more reading scheme books from school so I can try and be a bit more helpful.
Reading books are just absolutely not the be-all and end-all of reading. In fact, they are often really lacking in content, rich vocabulary and story line. They are simply a way that teachers check progress and teach specific reading skills such as characterisation, comprehension etc. As such, why would you want more of them sent home each week, when there are far, far better books available.
I'm sure your dd's teacher is well aware of her reading ability. As others have suggested, it is so much better for your dd to visit the library, or choose books at home to read to you. Why not just keep a list of the books that your daughter is reading at home, and send it in with her reading record every few weeks with a note about which books in particular your daughter enjoyed, and why.
Perhaps your dd could start to think about reviewing books after she's read them - giving a very short precis, saying whether she would recommend them to others and why. You could just do this verbally, it doesn't need to be written down.