10/04/22 - UPDATE
"Missing" to "Presumed Dead" per the following press release and news reports at:
  https://www.doj.nh.gov/news/2022/20220811-harmony-montgomery-disappearance.htm

Specifically, “These efforts have led investigators to conclude that Harmony Montgomery was murdered in Manchester in early December, 2019.”
https://www.nbcboston.com/news/local/pins-and-needles-update-on-harmony-montgomery-disappearance/2805130/
 “‘Harmony Montgomery Was Murdered,' NH Attorney General Says, in Major Update”

5/4/2022 - UPDATE
Missing New Hampshire 7-year-old Harmony Montgomery's father's girlfriend found dead
https://www.nbcnews.com/news/us-news/missing-new-hampshire-7-year-old-harmony-montgomerys-fathers-girlfrien-rcna21401

According to open source information,  Harmony Montgomery of Manchester, New Hampshire, was reported missing in December 2021. However, this would be two years since she was last seen by police when they responded to a residence associated to her in October 2019. Police have reportedly described Montgomery's  absence as "very concerning," but have currently declined to share the details of what hat her family knows concerning her last whereabouts.

**Authorities have announced a combined $12,500 reward for information about Harmony’s whereabouts. A 24-hour tip line for this missing person’s case is provided below. Authorities request the public report all information that could be helpful to the case at 603-203-6060.**