'Dr. Phil' show contacts Jacque Waller's sister about potential appearance

Jacque Waller's sibling may soon be on an episode of "Dr. Phil" to discuss her sister's disappearance, the family's spokeswoman confirmed Thursday.

Cheryl Brenneke was contacted by "Dr. Phil" producers about a potential episode on missing people, Brenneke wrote on the Find Jacque Waller Facebook page. Although the episode's planning is in its preliminary stages, Brenneke has submitted photos, Rawson family spokeswoman Laura Helbig said in an email.

Jacque Waller went missing June 1 and her husband, Clay Waller, is considered the primary suspect in her disappearance. Cape Girardeau Prosecuting Attorney Morley Swingle wrote in a court motion in September that he anticipated filing a murder charge against Clay Waller.

Brenneke was the target of a death threat made by Clay Waller over the message board Topix in July.

Clay Waller is serving a five-year federal prison sentence for the threat in Louisiana.