The bodies of Ms Low Soo Cheng, 51, and Madam Goh Seow Noi, 86, were found at the walkway of Block 9 at about 2.30am on April 21.

At a joint inquiry into their deaths on Monday, a coroner's court heard that Ms Low, a production operator, had changed her Central Provident Fund nomination three days before she and her mother fell from their 13th-floor flat, which they shared with her younger brother, Mr Low Chin Hwee, 49, and his wife.

A day before she died, she had transferred all her money in her POSBank account and shares to one of her sisters.

Asked by the sister why, Ms Low claimed that she was suffering from lung cancer and was due for surgery at the Singapore General Hospital. Ms Low also told her not to tell anyone.

A check with the hospital showed that no such operation was scheduled nor was she seeking any treatment there.

The court heard that family members had described Madam Goh as senile and had a poor memory.

But Madam Goh, who doted on Ms Low, was not known to be suffering from any medical condition.

It also emerged at the inquiry that Ms Low was married to one Lee Teck Heng, 51, in 1981 and had not stayed with him. Mr Lee had last seen her two days before her death and did not call or contact her on April 21.

State Coroner Ronald Gwee said in his findings that there was no clear evidence of any intention or intentions of either Ms Low or Madam Goh that they wanted to end their lives prematurely.

Neither was there any evidence on whether both women fell together or separately.