The mother charged with murdering her baby son who was found in the waters off Bedok Jetty last month will spend another two weeks undergoing further psychiatric assessment at Changi Women's Prison.

Lim Ann Nee, 44, had been ordered to undergo psychiatric evaluation for a week last week. Her lawyer, Mr Anand Nalachandran asked the court on Tuesday to ensure that this was the final extension of custody.

District Judge Eddy Tham said that he will write to the Institute of Mental Health to ask its psychiatrists to expedite the assessment. Her case will be mentioned again on Jan 7. The judge also allowed Lim's husband, Mr Sebastien Lacroix and her brother, to talk to her at the lock-up of the Subordinate Courts in Havelock Road. Mr Lacroix declined comment when approached by reporters.

Lim was pulled out of the waters off East Coast Park by the Police Coast Guard (PCG) at about 6pm on Nov 25. However, the body of her son, 17-month-old Emilien Lacroix, was found floating about 300m from Bedok Jetty three hours later, after being spotted by a passenger on a passing boat. Lim had recently lost her job with a technology firm. The couple, who live in Singapore, have an older son.