The jury has been considering a verdict since retiring on Wednesday in the Supreme Court trial of an Adelaide woman charged over the bashing death of her mother-in-law.

Caroline Dela Rose Nilsson is accused of murdering Myrna Nilsson in the laundry of the Valley View home they shared in September 2016.

The 57-year-old was bludgeoned when she arrived home from work.

Prosecutors alleged the accused 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.

However, 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.

The jury was sent home on Friday evening after more than 20 hours without a result and will return to court to continue deliberating on Monday.

Australian Associated Press