During Ms. McKibbin’s time on “American Idol,” her son Tristen, who was 4, handed her a rose after a performance. In 2014, Ms. McKibbin accompanied her son, then 15, when he auditioned for the show. As he sang a cover of Sublime’s “Santeria,” she mouthed the words.
“We just want the world to know, out of all of the wonderful things she was, the most important thing to us is that she was an extraordinary wife, the most amazing mother a son could ever ask for, and an angel of a grandmother,” Mr. Langley said on Sunday.
After “American Idol,” Ms. McKibbin signed a record deal with RCA Records, a division of Sony Music, but clashed with the label when she refused to record a country album, Variety reported. Her debut album, “Unleashed,” was released in 2007 by the Chenoa Music label.
Ms. McKibbin’s struggles with substance abuse, including alcohol and cocaine, were chronicled on “Celebrity Rehab with Dr. Drew” and “Sober House,” both on VH1, Variety reported. She also appeared on “Fear Factor” on NBC, and “Battle of the Network Reality Stars” on Bravo.
In addition to her husband and son, Ms. McKibbin is survived by a daughter, Carlie Sadler; her father, Keith McKibbin; a grandmother, Hazel Bunyea; and a granddaughter, Letti Sadler. She was predeceased by her mother, Teresa.
Mr. Sadler said on Facebook that his wife was taken off life support in the early hours on Sunday and her organs were donated. Before the operation began, he said, they played “Landslide,” one of Ms. Nicks’s signature songs with Fleetwood Mac, one last time.