article_snippet.sent: Nicholas Salvador is accused of killing Palmira Silva (left) in her garden in September last year .
article_snippet.sent: Salvador, 25, is accused of killing Palmira Silva, 82, with a machete.
article_snippet.sent: Salvador, an only child, is thought to have left home at the age of around 13 or 14 after arriving in the UK from Nigeria with her son parents.
highlights_snippet.sent: Nicholas Salvador accused of Mrs Silva .
  