Pregnancy, pruritus and pain, oh my! A case-based approach to abnormal liver chemistries in pregnancy

25-year-old female with hyperthyroidism who is 30 weeks pregnant initially presented with costovertebral tenderness, pelvic pain and nausea. Pain resolved after passing a kidney stone, but  initial labs are concerning for abnormal liver chemistries with AST of 118 U/L, ALT of 162 U/L, alkaline phosphatase of 200 U/L, Total Bilirubin of 2.0 mg/dL and INR of 1.0.  What is the next best step?