ORLANDO, Fla. (CBS/AP) Melinda Duckett took her own life after suffering “emotional distress,” her family claims, during an appearance on the Nancy Grace Show.

The family has filed a wrongful death lawsuit against the CNN talk show host, but Grace, who appears nightly on national television, is fighting to silence the cameras when she is deposed by the family’s lawyers.

Duckett, a 21-year-old Florida mother, was on Grace’s show in 2006 after her son Trenton went missing.

Grace grilled the woman, accusing her of hiding something. Duckett shot and killed herself the day the taped interview was scheduled to broadcast.

Grace’s attorney wants a federal judge to prohibit the videotaping of her client Thursday or prohibit the release of the deposition if it’s videotaped. The attorneys say it’s necessary to protect Grace from embarrassment.

Grace is a host of the “Nancy Grace Show,” a crime program on Headline News, which is owned by CNN.