The Otago Daily Times reported last week that Judge John Macdonald had lifted suppression orders on evidence presented at a depositions hearing in May last year, at which a complainant alleged she was raped on December 28, 2007, by Wayne Patterson (38), while being held down by his partner Nichole Field (30).
The rape charge was withdrawn in January this year.
The body of Mr Hutchings (18) was found in the Clutha River, near Kaitangata, on January 12 last year.
He had knife wounds to his neck and stomach.
Patterson was sentenced to a life imprisonment with 13 years' minimum non parole for murder and Field was sentenced to two years' jail for being an accessory after the fact.
Evidence in subsequent media reports has suggested Mr Hutchings was in the room at the time of the alleged rape and was laughing about it, something his sister Sarah Hutchings (18) believes is completely untrue.
"I was not there at the time so I don't know exactly what happened.
"But I do know Michael, and I know he wouldn't laugh at something like that."
The complainant's evidence given in a police interview and played during the rape depositions hearing was that she had gone to Patterson and Field's house and Mr Hutchings was there.
They had been playing cards and she had been asked if she wanted to play strip poker.
She had about four drinks.
She said later Field held her down while Patterson raped her and Mr Hutchings was in the room and had laughed at it.
Ms Hutchings said much of the evidence was a load of rubbish and had been taken out of context.
She understood that her brother was in another room when the rape was alleged to have taken place.
"I'm really, really upset. They have tainted the memory of my brother."
Ms Hutchings said she believed Patterson and Field would not care about the rape evidence coming out but it had made her brother look like someone he was not.
She also said reports that the motive for her brother's murder was because he had witnessed the rape were untrue.
Justice Graham Panckhurst said at the pair's sentencing it was not known why Mr Hutchings was killed.
Ms Hutchings said she was finding it difficult to deal with constant slights on her brother's character.
