Gemma Procter, 23, appeared via video link flanked by a carer from a facility in Northamptonshire wearing a grey, long-sleeved top and black trousers.
The defendant spoke only to confirm her name and sat silently throughout the short 10-minute hearing.
Procter is charged with murder after son Elliot Procter plunged to his death from a sixth-floor window of the Newcastle House apartment block in Bradford, West Yorks., on Saturday, October 21.
There was no plea entered by the defendant.
A trial date has been fixed for April 16, a week after the custody time limit expires.
Procter, of Bradford, West Yorks., will next appear at Bradford Crown Court on March 16 for a further hearing.