Linda Tripp, who died in April, published a memoir posthumously in December
Tripp, 70, was a confidante of Monica Lewinsky when they worked together
Lewinsky had an affair with Clinton from November 1995 until May 1997
In her book Tripp says Lewinsky's mother paid for her ticket to Clinton's 50th
Lewinsky went to New York for the August 1996 celebration at Radio City
While there she grabbed Clinton's genitals in what Tripp called 'a love massage'
Tripp recorded her conversations with Lewinsky and became a whistleblower
She was pilloried but says it was 'always about right and wrong', not politics