Quick background DS2 is 4 and has autism, very difficult to manage but not severe, mostly problems with behaviour, he was late to talk but talks the hind leg off a donkey now but he is not always appropriate iyswim and is very repetative. DD was 2 last week, very limited speech although she tries, she has tantrums, could be her age, she points and sort of babbles everything is 'dizzy' dogs cats etc, did say grandad last week quite clearly and when shown a pic of a shoe tries 's' sound. Anyway she points and takes me to what she wants nods and shakes her head when asked what she wants. My problem is she has started lining up her brothers cars, is this an indicator, ds2 always used to do it but not so much now so i donlt think she is copying. Any thoughts?