there are other ways to communciate then speech and not having speech is no excuse for not communicating.
.
have you tried sign language?
if she has good understanding you could go straight to BSL - otherwise makaton see soemthing special etc.
also using pictures/symbols. is she beginning reading? can seh recognize her name of first letter of her name?
my so has no speech but could read and recognize words early on - he now uses a small touch screen computer running software called the grid2, he uses predictve typing and pages of pre set words to construct sentences.
get her an ipod or ipad and download free apps for communication like taptotalk
proloquo2go is about £120 but you would need to play around with it a lot to make it fit her needs. but it has potential.
not speaking should not mean not being able to tell you anything - there are a varierty of means to communciate.
use simple books you make with sets of pictures symbols.
even a basic happy /smiley face and a way to answer eys or no -
you could also ahve pics of what she does att school so she can point and tell you which she did today
get school involved in this. having them do a daily note in her home school book on what she did gives you something to talk about - jsut give her a way to tell you herself using words/pictures/symmbols.
"just because i cannot speak, it does not mean i have nothing top say" - she surely has plenty to say and you/SALT/nursery need ot be working together to give her a voice - thru signing, symbols, pictures, words, ipad or iphone apps or a combination of all of these. a good home school book with photos so she can say yes i did this, plus means to say "no" is the place to start.
take lots of photos of everything adn everybody and make her a basic communciation book she can carry around and refer to -from people to places to food she likes. she CAN go ask for her favourite food in a restaurant if you give her the means to do so; she can tell you about her day at school if you and school work together on this.
PS>teh evidence is that using other means to communicate does NOT prevent speech happening, if it is going to happen.