I agree with myturn she is not going to fail. Like myturn said its more of an assessment of her strengths and weakness's if any. They will probably want to ask if she is saying a few words, fine motor skills like picking up small items like beads/hundred and thousands, passing objects from one hand to the other etc. Most of these things you will notice just by observing her playing. There is also a big variation on what children are doing at her age and just because they aren't doing something doesn't necessarily mean there is a problem.