Well, here is part 3 of this sorry tale. We had both dogs spayed, but there was a third fight a few days later. I foolishly relaxed for a moment as they both had cones on and I thought they wouldn't feel up to fighting. Anyway, the blanket and the bucket of water failed miserably and my husband had another trip to a and e. Bella now has staples in her other front leg. Winnie escaped with hardly a scratch, but there were punctures in the cone she had been wearing, so I think it literally saved her neck. We consulted the dog behaviourist, who recommended rehoming one of them unless we wanted to have to keep them separate forever, which really would be too stressful. She thought Bella would be happiest as an only dog, and Winnie would be better with an older male. Neither can live with a bitch. So now we have the sad task of choosing which to rehome.