Hi Tegan,
Lily actually sounds like she's a bit ahead of what Aidyn was at that age.
Delayed speech has been a big cause of worry for me too, however just these past few weeks Aidyn has begun picking up so much more - its quite amazing really, and I believe he is well on his way to catching up to the others his age (he is now 2.5).
I understand what its like to worry though, but please dont... not yet, as it just causes undue stress.... I would say to wait until she is at least 2.5 or 3, and then look into it further if you think there is still a problem.
The only things I can suggest is talking to her heaps, and telling her what things are, and reading lots too... but you're probably already doing that stuff anyway!
She sounds very normal to me though