A manslaughter charge against an Adelaide woman accused of killing her mother-in-law has been dropped.
Caroline Dela Rose Nilsson was tried twice for the murder of Myrna Nilsson in the laundry of the suburban Valley View home they shared in September 2016.
At her first trial in 2020, a jury was unable to reach a verdict.
At her second trial earlier this year, a jury found her not guilty of murder but could not reach a verdict on the alternative charge of manslaughter.
In the Supreme Court on Monday, prosecutors indicated that a third trial on the manslaughter charge would not proceed, entering a nolle prosequi.
Myrna Nilsson, 57, was bludgeoned to death when she arrived home from work.
In the first trial, prosecutors alleged her daughter-in-law was in the house at the time and later told police there had been a home invasion involving two or three men who assaulted her, tied her up with tape and speaker wire, and ransacked the house.
But they said it was the crown case that no strangers came to the house that evening and Nilsson had lied to cover up the killing.
Nilsson's defence described the 29-year-old as a loving mother who had a good relationship with her mother-in-law.
They said there was no motive for the alleged attack.
