Tan, it seems to me that alot of babies put there effots into either moving about, or chatting! Obviously that's not always the case, some do both!

DS is still commando crawling, shows absolutely no interest in pulling himself up onto furniture, cannot go from sitting to cawling and vice versa, cannot clap etc etc. So although he's not 'behind' he's not nearly as developed as some babies his age. Yet he chatters away ALL DAY and has learnt to wave and say bye bye.

What I'm trying to say is that they're all different (as the other ladies have already pointed out) and will do things when they're ready. I guess if by the time she's one you don't think she's improving you could check it out, but if you know her hearing is okay, then she's probably just not interested in doing it yet

Try not to stress hun, it sounds as if she's going great guns in the moving about department!