Crystal Sorey, mother of Harmony Montgomery, has filed a wrongful death lawsuit against the state of New Hampshire and its Division for Children, Youth and Families (DCYF), alleging negligence in protecting her daughter from abuse prior to her murder by her father, Adam Montgomery. The lawsuit claims that multiple reports detailing concerns about Harmony's welfare were ignored by social workers, including alarming accounts of physical abuse and neglect. Adam Montgomery, sentenced to 56 years to life for the murder, killed Harmony in December 2019, but she was not reported missing until 2021, and her remains have never been found. Sorey aims to hold the state accountable and bring attention to systemic failures in child protective services. The case has drawn significant media attention and highlights the need for changes in how child welfare cases are handled. Following a court declaration of Harmony's legal death, Sorey has pledged to continue searching for her daughter's remains.