Alex (Snowy's husband) has asked me to update, as he's not feeling able to do so, and doesn't want to leave Snowy once he's back with her. He also asked me to thank everyone for the good wishes and PMs, to which he will reply once he is able.
Snowy's infection (the ventilator-associated pneumonia - VAP) is not responding to the treatments that have been tried so far, and all her observations (chest x-ray, white blood cells, temperature, heart rate, etc.) seem to be showing signs that the infection is getting worse rather than better. In addition, she now has an empyema, which is a localised collection of infection/pus, and is a complication of the VAP.
As I'm sure you can imagine, fighting this aggressive infection is taking a huge toll on Snowy's body - particularly on her heart and lungs, even though she is supported with mechanical ventilation and other interventions.
Please join me in sending lots of love and supportive thoughts to Snowy and her family!