A Nashua mother convicted of beating her 3-year-old daughter to death will be sentenced Friday morning.
Twenty-six-year-old Katlyn Marin was found guilty of second-degree murder in August for the 2014 death of Brielle Gage.
Prosecutors say Marin physically assaulted her daughter over the course of several years, which resulted in the child's death.
Prosecutors will be asking the judge for a sentence of 45 to life.