Right, I've had my headphones on to listen carefully, you did good to get the sound! That is exactly what Gwenny used to do, the noise and the movement, and the breathing movement is one of the symptoms of Gwen's that has returned. Gwen tends to hunch up further though, and when she falls asleep her nose lowers to the ground; The good thing is that Midge looks a lot more alert than Gwen did when she had the problem.
I know we have discussed this a lot but seeing and hearing this I stand by my thoughts. See how the diuretic works over the coming hours, will catch up with you soon.