I did it. I finished it on time, by the self-imposed deadline that was the 22nd of December. This gave me plenty of time to block the shawl and have it all dry and wrapped up before the arrival of the French guests on the 24th. Phew. I can't say it was a greatly enjoyable knit. It was put on hold for a couple of weeks before I messed up a couple of rows and had to take a few back as a result. Most painful.
But looking at the result, I'm ever so proud. It looks as intricate and delicate as I'd hoped for, and most importantly, my nan loved it.
In the end, it will have taken a lot of time, patience and concentration, but it was worth it. Although don't ask me to make a second one, that won't happen in a million years!!
ps: all details on Ravelry!