Thelma Dennany and her brother Mikey, died in a car fire near Multyfarnham.
A mother has been charged with the murder of two of her children at a special sitting of Mullingar District Court this evening.
48-year-old Lynn Egar, with an address at Winetown, Rathowen, Co Westmeath, appeared in court tonight.
Five-year-old Thelma Dennany and her two-year-old brother, Mikey, died in the car fire, in Co Westmeath on September 9th.
48 year old Lynn Egar did not address the proceedings, following a five-minute hearing.
She was remanded in custody to appear again at Athlone District Court via video link on September 28th.
The children's mother was detained under section four of the Criminal Justice Act, on Wednesday.
Detective sergeant David Donnelly told the court that he charged her with two counts of murder at 7.22 pm.
"In reply to charge after caution she made no reply," he said.
She was remanded to the Dochas Centre, the women's unit of Mountjoy Prison in Dublin.
A passerby came across their car engulfed in flames at Lackan, a townland on a rural road linking the villages Multyfarnham and Coole.
The mother-of-four and toddler Mikey were pulled out and later emergency services found the remains of Thelma inside the car.