Finito! This is Summer Blanket Plan B Number Two for DD (for Christmas).
The edging is one round of treble shells then 2 trebles, 1 chain, 2 trebles in each space ...
... with 2 tr, 1 ch, 2 tr, 1ch, 2 tr in the corners. I think that this is a Bunny Mummy edging. (Her blog should be in the side bar.)
Number 3 blanket will be for DS, partner and pussies for Christmas.
Number 1 blanket is for me and that one will have to wait.