Thankyou for posting this Sooz, it means a lot to know people are thinking of her.
We just went to the emergency vet and she said she's extremely emaciated and her lungs are full of fluid. Also she thinks the infection in her abcess has progressed to the bone and that it's this additional stress which has prompted the RTI. she said that any additional treatment would just be prolonging her suffering as she is in terminal decline
They suggested that as she is clearly so uncomfortable with breathing and eating that it might be best to have her PTS then and there, or they could hospitalise her overnight although again this would just be a matter or prolonging the inevitable.
But she is still eating a little and is capable of resisting when I try to get her into the carrier (!) so I brought her home. The vet thinks she will pass in the night but I want her to do so at home with Apache if possible.
She has had pain relief and s/c fluids to make what may be her last hours more comfortable and I will take her back tomorrow if her suffering has become too much.
Thankyou for your thoughts everyone.