No, not reading ANS mind, believing what KE, HKS and Lilly Sanchez TOLD him! I think others should have put these questions Ashley just asked to him weeks ago..
Yes i know he wasn't reading Anna's mind. I know that he was believing everything HKS et all told him and drew his conclusions from those "facts". Fact: Anna liked Chloral Hydrate. How the hell would he know that? Only by hearing that from Stern and Co.