MIAMI -

The Miami regional director for the Department of Children and Families is resigning.

The agency praised Jacqui Colyer Tuesday for her passion and service.

Her departure comes months after the agency was harshly criticized when adoptive parents Carmen and Jorge Barahona were charged in the death of their 10-year-old daughter, Nubia Barahona.

The girl's death sparked several personnel changes at DCF. Colyer was reprimanded and one investigator was fired.

Police found the girl's decomposing body in the back of Jorge Barahona's truck in February. Her brother survived, but was badly burned after his father allegedly doused him with toxic chemicals.

A DCF investigation revealed red flags along the way. A hotline caller said the twins were being bound and locked in a bathroom, but DCF investigators never called police during their three-day search.