A south-central Kansas woman faces two felony counts after a house fire killed her 23-month-old twin sons.

Pratt County Attorney Ken Van Blaricum said Friday that Destry Ibarra is charged with two counts of aggravated endangering a child for the Dec. 23, 2013, fire that killed her sons, Jayce and Jasper. He says Ibarra was arrested Thursday and released on $15,000 bond.

The Wichita Eagle reports that fire investigators have determined the fire resulted from careless cooking methods that caused a grease fire in the kitchen.

A phone listing under Ibarra’s name rang unanswered Friday, and Van Blaricum said it was unclear if she has a lawyer. He said her first court appearance is scheduled for May 7.