oh ffs. What does she consider 'necessary' then? Lazy cow!
Write in it yourself. Every day.
Ask the teacher for a timetable. Make a book with daily lessons marked out Against every lesson, request that one or two lines are written about something positive dd did and dd is to be involved in those comments.
As soon as she gets home, either read the sentence out with praise, or turn it around and ask it as a question for your dd to comment on.
Or, start a thread about interactive diaries, as Moondog has been involved in developing then and can supply evidence to support their use.
If the teacher is still resisting, meet with the senco about it.
Say all government docs, policies and general good practice shows that children do better when their parents are involved and support their education, but your dd's disability is preventing this from happening for her which puts her at a disadvantage.
Next stop the head.
If you are specifc about what you want, and provide a template, then the lazy cow doesn't have to think to hard or put much effort into it, nor wiggle out of it once agreed.