My mom has pancreatic cancer & just learned it spread to her liver. she is in the hospital w/jaundice, chill, her biliruban is 3.9. what is happening?

Sorry to hear this: First off I wish your mother and family the best. Also, your best bet is to ask this very important question to her oncologist and/or covering doctor. They have access to more information than you can readily provide us here and it will be more meaningful/accurate.

Biliary obstruction: Pancreatic cancer commonly blocks the flow of bile from the liver into the small bowel. Usually a stent (tube) must be inserted to relieve the obstruction. Presence of chills and fevers suggests infection behind the obstruction. I'm sorry to hear of your mother's so sick.