A 92-year-old woman was left in a serious condition after she was allegedly stabbed and bashed by her house cleaner.

Police were called to the elderly woman's home on Holden Street in Ashbury about 10.45am on Wednesday after she activated her body-worn panic button.

When police arrived, the woman was bleeding heavily from her scalp and abdomen.

She was taken to Royal Prince Alfred Hospital, requiring surgery for trauma to her face and body as well as several stab wounds.

About 12.30pm the same day, police arrested a 35-year-old woman in relation to the attack after pulling over a vehicle in Illawong.

She was taken to Sutherland Police Station, where she was charged with attempted murder and wounding a person with intent to cause grievous bodily harm.

The alleged offender, who is currently being treated at Sutherland Hospital for an ankle injury, was refused bail and will appear at Parramatta Bail Court on Thursday.