Sasha had her followup visit with our new vet yesterday. She is scheduled for her BAT test on Monday and the vet would like to followup with a sonogram (regardless of the BAT test results) as she explained that sometimes milder cases of liver shunt don't always show in the BAT. She will also be doing a urinalysis....bloodwork was already done at ER visit and is normal.
Thanks again to everyone for your responses and advice. I'll keep you posted.