Glaecit...

I can't remember what made the face but she does seem a bit more at ease with the arm.  It's still a bit heavy for her to move it around by herself too easily but she can at least move it.

The next hurdle is ripping off the clingy to mummy plaster.  She had a wee melt down when it dawned on her that mummy did have to go back to work.  I think I managed to talk her down with prime numbers.  Trying to explain what they are.  This was on the back of the square root conversation we had in the car earlier.