Tan, I agree with the advice about not worrying. They all do things at different stages. My two boys are so different that way - Jack was talking really early, and I have been really worried about Thomas who wasn't even close to doing things at the same age. But for the last few weeks (at 15 -16 months), he has really started saying a heap of words all of a sudden. He was understanding what we were saying to him, but just took his time talking back LOL. I am sure Izzy will be the same. I have been told that they should be saying 50 words by 2 1/2, so she has plenty of time!!