Im not a teacher I am a nursery nurse(NNEB dip)but I have 3 sons and have succesfully home educated them all for various periods the youngest being 8 and hes never been to school although hes an excellent student.
Children cannot read until they are ready,until the letters join together and they can recognise them independently that is not reading its recognising words.
You cannot force this or even teach it in an academic year it really is when a child is ready it clicks into place.
However school can be v difficult for a child that doesnt yet read so its very important to try and guide a child to want to read and to do this I can reccomend several ways both orthodox and perhaps not so......
always have subtitles on the tv this helps link spoken and written words and sounds.
Look at pictures in magazines and write captions under them
make up silly rhymes - nickschick clock ticks etc etc
read everything tins of soup,newspapers bus tickets anything with her little and often.
get some reading books and sound out the words
practice the alphabet but do phonetics too a as in hay a as in hat etc
practice the alphabet the sounds and the shapes.
dont stress trust me it doesnt help,
ds1 was 4 he didnt talk but he could read,we sat and read through many books - very boring village with 3 corner stuff and really he learnt them by rote as opposed to reading and digesting
ds2 was quite honestly 7 before he 'got' reading in between that I cried I shouted I begged and I even had it as my birthday wish - it came but not when i wanted it when he was ready for it.
DS3- Ive never physically taught him to read- I taught him sounds and how to squish the sounds together to make the word and I would say hes been reading basics since he was 3 or maybe younger- no stress no tears (for either of us lol).
It will all come together.