Got her to admit that the cholestechtomy was on the paper, that's the easy part. You need to find a way to make it clear that she also had access to that paper before choosing to perform surgery.
Change "one of the things you look at" to "you didn't check... on (date)"
asked this witness the causation issue very directly. This witness gave you a lot, but don't count on it. Construct a sequence of questions based on facts in the record that can get you this conclusion more repeatedly.
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