Relatives of a mother who committed suicide after CNN’s Nancy Grace aggressively questioned her about the disappearance of her son sued the network and the talk-show host Tuesday, accusing Grace of pushing the woman over the edge.

Melinda Duckett shot herself to death on Sept. 8, one day after taping a segment on Grace’s CNN Headline News show in which Grace interrogated Duckett about her whereabouts on the August day that 2-year-old Trenton Duckett was reported missing. The network aired the segment after Melinda Duckett’s death.