Hi Sylvia,
I'm sorry that you are facing such difficult times with your mum. Has she been tried with thickened liquids/puréed food? Or is she refusing everything?
I suppose you will have to wait and see what the salt therapist and doctors say, but as I'm sure you know, sooner or later, this awful illness does take its toll. And, often, as a person's system starts to shut down, they stop eating and drinking; their body can't process food any more. Effectively, the person doesn't die because they've stopped eating and drinking, they've stopped eating and drinking because they are dying.
It's a very hard time to face. I do hope you have someone to support you?