The petite woman is often spotted apron-clad at a coffee shop at Block 75, Toa Payoh Lorong 5, busy clearing glasses and taking orders. The drinks stall owner chats easily with customers, but this merely masks the disquiet Madam Ang Goon Lay, 65, struggles with.
It has been nearly 26 years since her seven-year-old daughter Lim Shiow Rong was raped and strangled, and the murderer has not been caught.
On June 24, 1995, Shiow Rong told her mother she was off to see "papa's friend" and ran off while Madam Ang was busy at the coffee shop, which used to be owned by her husband.
That was the last time she saw her daughter alive.
Madam Ang's second daughter, Ms Lim Jia Hui, 27, has now made it her mission to find her sister's killer to help her mother find closure.
Speaking to the media yesterday at the coffee shop, Ms Lim, who works at a customer service call centre, said: "My mum lives in guilt. She thinks that she didn't take care of her daughter well enough and blames herself...
"So this is why I want to find the murderer. I don't want her to live in guilt."
Her hope of finding her sister's killer was renewed when police recently arrested a man for the murder of Felicia Teo, who had been missing for 13 years.
On Dec 17, 2020, Ahmad Danial Mohamed Rafa'ee, 35, was charged with murdering Ms Teo, 19, at a Marine Terrace flat in 2007. Another man is at large for the crime.
"If they managed to arrest someone so many years later," Ms Lim said, referring to Ms Teo's case, "hopefully the police can find who did this to my sister. I believe they can find something with DNA and fingerprints (since Shiow Rong) was beaten up".
Shiow Rong's body was found the morning after she went missing, in a semi-sitting position in a drain near Jalan Woodbridge on June 25, 1995.
Investigations revealed that she had been raped and strangled.
Ms Lim said that her father, Mr Lim Kim Siong, who was just one week into his jail sentence for drug-related offences at the time of the incident, also felt he was at blame. He died in 2016 from an abdominal aortic aneurysm.
"After he come out of prison, he changed a lot. He stopped his drug habits and became a good father. He felt very guilty because he thought it he did not protect the family," said Ms Lim.
"I don't want this to be a regret if I am not able to find my sister's killer. I have to step up," she added.
Ms Lim recalled how her parents took extra precautions with her while she was growing up because of what happened to her sister.
She stayed with a nanny until she was in Primary 5, and was often reminded never to speak to strangers.
Despite these precautions, Ms Lim recalled two incidents when she was in primary school in which men she did not recognise approached her, claiming to be her father's friends.
On one occasion, she walked off with a man, but her aunt spotted her from a distance and called out to her, causing the man to flee.
Ms Lim's search for her sister's killer has entailed sifting through the National Library archives online, digging up newspaper clippings of the incident that her grandmother has stored, studying a Crimewatch episode about her sister's case, as well as reaching out to Crime Library Singapore.
Crime Library Singapore founder Joseph Tan, who helped Ms Lim contact the media, said: "By making this case appeal, we hope to cast the net for information leading to the arrest of the culprits for the police to close this case."