She sounds just like my DS was. I think that I have posted in another thread that you started before, but with DS it turned out to be reflux. Maybe take her to the docs just to weigh out a medical issue. Then you will know where you stand much better.

I know exaclty how you feel. So many people would say to me at least he sleeps all night.... But I was exhausted, I was pacing around with him all day without a break. Anyway he staryed a not so good day sleeper till he was 12 months old. But in a few months, she will be playing more independently, and you can at least have a sit down rest while she has a play on the floor.

Take care