(NewsNation) — The husband of a woman who took her own life doesn’t display the traditional emotions of someone experiencing grief, according to a body language expert.

“We don’t see grief, the little bit of grief … is taken away by a smile,” behavioral analyst Scott Rouse said on NewsNation’s “Banfield.” “And a smile is more prevalent than his grief.”

The death of Mica Miller, whose disappearance drew national attention, was ruled a suicide after an investigation by the sheriff’s office. Miller, 30, of Myrtle Beach, South Carolina, died from a self-inflicted gunshot wound April 27 at Lumber River State Park in North Carolina.

Her husband, John-Paul Miller, was served with divorce papers just two days before Mica’s body was found in Robeson County, according to an affidavit filed by Sierra Francis, Mica’s sister.

Mica Miller’s family has accused her estranged husband, John-Paul Miller, a local pastor, of making exaggerated claims about her mental health that led to her being involuntarily committed to a psychiatric facility.

John Paul Miller has not been charged in connection with his wife’s death and has denied any and all allegations he was involved.

Rouse, however, believes John-Paul Miller’s body language tells a different story.

“I don’t think he’s feeling any grief here,” Rouse said while being shown video of John-Paul Miller. “We’re not hearing it in his voice. He’s under the impression when you’re sad that your voice goes way high. His voice is way too clean for this, way too clean for him to be as sad as he’s saying that he is.”