Little Miss Chez, you have chosen a beautiful name for your DD, you have great taste ;-)
I know how sleep deprivation can get you to the end of your tether. I've been there a few times and I'm not proud of it. My DD was a great sleeper mostly (well, in my eyes she was) but she went through stages when she wasn't. And there seemed no consistent explanation. Sometimes it was teething, sometimes it was developmental, sometimes it was seperation anxiety, most times, I have no clue. The worst was around 10-12 months. And believe me, I was going insane, ask my DH.
Please keep telling yourelf: This too shall pass! It feels like there is no end in sight, but it is going to get better. I guarantee it!

Belinda, I looooove DD sleeping on me. Some nights, I just lay in bed with her sleeping on my chest (this is how she slept or the first 2 months of her life). But, at nearly 1, she was getting so heavy that I would wake up after a few hours and feel a little short of breath. Most times I could gently roll her off my chest and into the crook of my arm and she would keep sleeping there. It is so nice to have those cuddles and the deep connection you get from this. BUT, only as long as you feel good about it. If you start to resent it, it is time to try and gently change things around.

Saša