She's, I suspect, still got a memory of the qualified medical doctor system from Brockton Bay, even if that culture was arguably on its last legs. So, seven years training to
start being a doctor, way before you specialise.
Also, Taylor, good at doing things, under pressure, not so good at the self-image side. I get the impression she's not completely internalised just how ridiculously good she is at the medical stuff. Then, from a slightly different viewpoint, she wants to be able to justify, in lots of cases, just how good she is.
Taylor? Not, yet, a complete master of joined-up thinking
(Mind you, even after many decades of practice, some arguably never get the hang of it...)