What did Dr. Alex M. Spektor say about Mary killing the baby if she was taking the medications she was prescribed?

Dr. Alex M. Spektor said in his notes that Mary was prescribed Ritalin and Catapres. If Mary was on the medication and dosage as prescribed, she would not have had the strength to carry out the crime. The combination would have made her highly lethargic. He wondered if the medication was a form of pacification.