CONCORD, N.H. (AP) — The New Hampshire Supreme Court is going to hear the appeal of a woman serving a sentence of 45 years to life in the beating death of her 3-year-old daughter in 2014.

Twenty-nine-year-old Katlyn Marin was found guilty of killing Brielle Gage and was sentenced on a second-degree murder charge. Her attorney questioned whether Marin voluntarily and knowingly waived her Miranda rights.

The appeal also questions whether Marin’s attorneys should have been allowed to cross examine the prosecution’s key witness, Marin’s former boyfriend.

The case was one that prompted calls for reform at the state’s Division for Children, Youth and Families, which was involved with the family before Gage’s death.

The court is hearing oral arguments Wednesday.

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