So I put Jack (son) down for his nap, sat down at my computer, decided to be ruthless and cut out the (tiny) bit that was giving me grief and just started to write.
Two hours later, I've written 1434 words and have got to the end of Chapter 7, barring the coda.
I still have the very end to write, and a few little bits for the middle, and a few gaps to fill in and order of stuff to sort out. But considering how long I've been trying to write this bit, this is amazing! I'm so relieved and excited and loving my story again.
Oh, and if anybody doesn't find this stuff hot, I'm personally killing them. *g*