In the face of loss, Columbia sister takes on role of mother

Friday, December 28, 2012 | 6:00 a.m. CST; updated 10:57 p.m. CST, Saturday, December 29, 2012

  COLUMBIA — Christina Robinson, 29, and her 10-year-old sister, Samantha Staples, lost their mother to lung cancer about four years ago.

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