I would leave her to it, see how she goes when she stars school, you don't want to maybe confuse her with what you do and what the school does.
In DS1 class there are 2 kids with speech issues inc. verbal dyspraxia and are just about to end year 2 and the difference is HUGE and BRILLIANT. They have had extra help, but also being part of the main class has really helped. Time is the best thing on her side to be honest, small steps not too much pressure on one area.
Just make some fun games when you are out and about and at home, like
'ooooh look CAT, that starts with a curly C, lets say C C C together'
You know relaxed chatty silly fun stuff with everyday things; T T T T Toasts ready!
And DON'T worry that she won't be up to speed with other kids, some have learnt to read and write before they start school in one form or another, some have never done anything and some have bits and bobs, so don't think for one minute she's going to be below some sort of imaginary benchmark.
You should get more of an idea when she gets assessed with ideas for her, so try not to worry too much, my DS1 has dyslexia and issues with dyspraxia/gross motor control and he loves school and goes at his own pace with great teacher guidance, when he started he would not say boo to a goose for months and but he gradually found his feet!
good luck. xx