Picù update.
The ultrasound went well!!!
There is no permanent liver damage!
She simply has an incredibly small liver, which is probably part of the reason she had this episode of acute liver disease.
So...she'll probably be fine. 
We need to give her antibiotics, lots of fluids, food and a long list of medicines...
We have a tough couple of weeks ahead of us.
But it could have been much worse, so I'm happy.