Always retain council and take their advice, but I would be wary of one that recommends submitting to a polygraph in any serious felony case. They are highly dependent on the skill of the person administering the test and the questions being asked. Wording can make all the difference in how you react since they are not measuring truth, they're measuring your stress. There are too many variables. Polygraphs are not even admissible as evidence in every state.Her refusal for a voluntary psych eval is one more nail in her coffin. It's like the parents of a missing kid refusing to take a polygraph to clear themselves. She is stuck on stupid.