Oh you poor thing. She does sound overstimulated and overtired to me too.

Can I throw some suggestions at you? Feel free to ignore them or you may already be doing them! When you start your day and have given her a feed, maybe allow her a little time on the floor (even just 5 or so minutes) and as soon as she is showing a tired sign (my DS2 would start kicking his legs jerkily and grizzle a little) wrap her up and put her to bed. Newborns don't need much wake time (up to 45 minutes including a feed) before they get tired. It does feel like you never see them for the first month or so! I'm sure you know every settling technique under the sun so I won't post my suggestions!

If you are still having trouble settling her even after doing all of the above, I would suggest (like Deirdre above) using a baby hammock. I used one for DS1 and it seriously changed our lives and restored our sanity! You can hire them from baby hire places if you want to give one a try.

Wishing you and your baby some good sleep very soon .