Stefania Glowka, 63, is accused of killing Tamara Glowka, who was in her 80s.
The Polish national was remanded in custody during a hearing at Bristol Crown Court on Wednesday, at which she did not appear.
Ms Glowka is next due to appear in court on 20 March 2026, and a provisional trial date has been set for 1 June 2026. She has not entered a plea.
Police were called to reports of an assault on Christmas morning at a flat in Keepers Road, Devizes, Wiltshire. Ms Glowka was later declared dead at the scene.
Ms Glowka, who was known to the defendant, was identified from publicly available court papers.
A Wiltshire Police spokesperson said: “Formal identification of the victim is still to take place.
“A preliminary post-mortem examination has been carried out but further information is needed to establish the cause of death.”
