Jamee Christine Grossman, 24, a mother of two, disappeared after attending a party in Lockwood, Montana, near Billings on March 16, 2012. She had been living in a motel with her boyfriend, Frank Hammontree, and was last seen at the gathering in good spirits; the next morning guests found she was gone. She was due to work at Fiddler’s Green the following day but never showed up.

Family members say Jamee had been through a difficult time, had distanced herself from relatives during a tumultuous relationship, but was making changes — enrolling in college and caring for her daughters. Police followed multiple tips, including reports someone used her identification after she disappeared, but leads eventually went cold and no significant progress has been reported.

Who knew Jamee around Lockwood or Billings in March 2012, or has information about her last known movements or the party that night?