Yeh, just keep an eye on her. When she gets to about 3 and you've still got concerns, then seek opinion from a Dr etc. But kids change so much in the first few years, so try not to worry yet . It's never too early to teach her appropriate behaviours etc though. Even at such a young age you can help her manage her emotions and hyperactivity. When my son was her age and off the wall hyperactive, I started teaching him coping techniques. Like breathing, counting to 10 etc. I taught him to recognise it physically, and to this day tell him that when he gets that way, it may hurt his heart - in a literal sense. For his hyperactivity, I started him on fish oil at 18mths and it made a huge difference. I get my son to close his eyes and imagine the waves of the sea and things calming too. Doesn't work all the time, but remember that you are her best advocate and you can help her along
My younger son is also autistic but more aspergers I'd suspect. He doesn't mind mess at all and can't find the road to his own mouth..lol! Each autistic child is different. With my oldest, he would talk talk talk but I couldn't actually understand him til he was 3. So while he had the ability to speak and formulate sounds and modulate his speech, he wasn't making sense. He also had weird names for things, but I knew what he meant. He also used alot of 'echolalia' which is where autistic kids repeat what you're saying. So you think 'oh yes, he is understanding me coz he's repeated it' but in actual fact, he was just echoing what I had said.
And while my son has perfect speech now, a speech pathologist assessed him and he's actually not comprehending alot. So he can talk fine but his comprehension is way out. For instance, if I show him a page full of drawings, he can't distinguish them all, or pick out the thing I ask him to. So there is so much to autism that I think we all take for granted as being natural to us. Try and harness her hyperactivity with lots of physical play. I did this for my son by enrolling him in daycare a couple of mornings a week. I knew even then he needed it and also the social outlet. It worked wonders. My son was a screamer, for what I would think was no reason, yet when he was old enough to tell me, he said that noises were too loud, or the sun too bright. Little things like that.