Here is what I'd do:
Take her off supplements and put her on regular puppy food.
Retest in 30-60 days.
If it is normal, retest in another 30-60 days (bile acid shouldn't go up that high for no reason and even with meds that is high).
If it is abnormal go to protein c test.
If you notice any symptoms at all throughout this, put her back on supplements and do further testing.
I would not vaccinate during this time because that will for sure skew the results.
I would wait on the spay (if you are even planning on doing that) because if the numbers stay up they may want a liver biopsy that could be done at the same time.
I know I am extra cautious but like I said, Ellie's went done to 15 and back up to 106, so I'd rather be safe.
I don't think Denosyl (or VetriDMG) would lower bile acids if it is shunt or MVD. I have never heard that anyway.
And Ellie had a bile acid test (pre and post), blood panel and titer test done at the same time and she has plenty of blood left.