Santina's mother says she still doesn't know why toddler was murdered 

Bridget O'Donoghue says the haunting question was never answered during Karen Harrington's murder trial

Bridget O'Donoghue: 'I am very angry with that woman. She just sat there inside court as if nothing had happened.' Picture: Eddie O'Hare

The mother of murdered toddler Santina Cawley has said she still doesn’t know why Karen Harrington killed her baby.

Bridget O’Donoghue said that haunting question was never answered during the course of the murder trial.