Hi op, apart from her age and reluctant reading, are there any other concerns you have?
The brightest boy in dd's class (year 3) is an August Born and the brightest girl is May born.
Dd started reception aged 4 and very bright and assured. She was on the "top table" which was effectively a colour but we wee told that.
I am and always have been a huge reader and has exposed dd to books from a tiny baby, expecting her to follow in my footsteps.
She absolutely hated reading and finished reception on the red level ORT books which was the only area where she was not exceeding.
She was still on the red books in the November of year one and then all of a sudden she began to show an interest. I beleive this was due to several factors but the main one was letting her choose a new book every Friday after school. Dd got free reign to choose within her age range and this began her love of reading. She had the choice of what to read rather than being given a Biff, Chip and Kipper book.
She ended year one way above her expected levels and has continued to thrive.
She is a February baby so admittedly younger in the year than your dd but I had almost given up and once it all clicked she never looked back.
Her confidence also increased as a result.
Please think carefully about the actual reasons for your concern. Is it something you can help with over the summer?
I know in dd's class ( i help with reading ) that there is a huge spectrum of reading ability from children like dd who are now free readers to children who are on stage 2 ORT.
A good teacher can and will be able to support all abilities. Try not to worry.
Dd is my second child and I've said with both of them that year one was the year that they made huge progress academically and matured a lot emotionally.