Police tape marks off the Colonial Dr. townhouse complex where Teresa Amelia Williams, 24, lived with daughter Evadne Williams-Scott. (MICHAEL PEAKE/Toronto Sun)

TORONTO - A Toronto-area mother is accused of murdering her two-year-old daughter on New Year's Day. Teresa Amelia Williams, 24, was arrested at her home Tuesday afternoon. Police said they had to use a Taser on her because she was hysterical.

She's charged with second-degree murder and is scheduled to appear in court Wednesday.

An autopsy is also scheduled for Wednesday to determine what killed Evadne Williams-Scott, whose body had "obvious signs of trauma," Acting Insp. Randy Cowan said.

He said Williams was in bare feet on the balcony of her apartment when police responded to a 911 call from neighbours about a disturbance.