Family and friends are pleading for help finding a 22-year-old woman from Long Island who went missing while traveling through Wyoming on a "van life journey" with her fiancé, according to investigators looking into her disappearance. Gabrielle (Gabby, as those close to her call her) Petito of Blue Point was reported missing on Sept. 11 by her family, but police say the family hadn't heard from her since the last week of August. Petito had been traveling with her fiancé in a white 2012 Ford Transit when she stopped communicating with family. Petito told her family that she and her fiancé were heading to Grand Teton National Park in Wyoming when she last contacted them.