Hi K.,
If you are concerned, I would contact your county's early intervention program to have your daughter evaluated. It is free and they will assess every component of her development. If all is fine, it will certainly give you peace of mind...if there is a minor lag, they have therapists (also free) who can bring her up to speed. Good Luck.
I had concerns with my third. Everyone told me not to worry. I finally had him evaluated at 21 months. He was ok then. But then as the 2nd year progressed, I continued to have concerns. He was evaluated again in April and is currently receiving services that will bring him up to speed and get him where he needs to be. If I could do it all over again, I would have had him screened earlier....
Warmly,
T.