Another non sleeper! Thanks Heidi for your reply.
As I said to Christy, it's nice to know (although sad for you) that I am not alone. I think I was VERY spoilt with Ivy's big sisters and with Noah. I just don't know what to do with the Ivy girl. She is a mystery to me.

Ivy slept another ten minutes and then she was awake, screaming.So, 20 minutes in total, after an hour and a bit of trying to get her to settle.
It coincided with the big kids coming home from school, so who knows how long she might have slept?
It's not so much the day sleeps, I guess, although when I get a break, it is a Godsend. It's more the night sleeping that is a worry and the fact that she is so overtired and grumpy for a large part of each day.

I was talking to DH just before and we are going to put her angel monitor back on he matress. It alarms if there are any apnoeas but we took it off when she turned one as it seemed to go off alot. A little sleep study of our own! DH thought we might even set up the video cam to film her during the night, to see if there is anything we are missing! Perhaps going a bit too far, me thinks! LOL