A prosecution rebuttal witness portrays Lisa Montgomery as intelligent, manipulative, and perfectly aware of what she was doing when she killed Bobbi Jo Stinett in Skidmore and cut Stinnett’s baby out of the woman’s body.

Forensic psychiatrist Park Dietz says Montgomery did have some mental problems but none of them leave her unable to understand what she did was wrong.

Montgomery’s lawyers have tried to build an insanity defense. Testimony will probably end today. Closing arguments are expected on Monday.