From what I've read, by the age of 5-7 then any premmie-ness (as in talking about adjusted age et cetera) isn't needed - the child will have caught up in all respects. She is who she is; focus on the positives, like her character, because the negatives (such as slower to crawl/walk/talk) really aren't around too long in the grand scheme of things.

As I say about DS, he wasn't late, we just didn't have our diaries in sync. He arrived on time for him, who cares that the doctors were tapping their watches - or in your DD's case, still organising the music choice for the evening.