Urangua ""Sisi"" Mijiddorj, 14, of Fort Collins, passed away on August 20, 2009 at the Medical Center of the Rockies. She was born on June 1, 1995 in Ulaanbaatar, Mongolia, to Mijiddorj Jigjid and Khishigbayar Jamiyansharav. She was a freshman at Poudre High School where she was enrolled in the IB Program. Sisi was a very smart young girl with a passion for life. She was a gracious young lady and thankful for every opportunity that was given to her. Sisi loved spending time with her family and friends and loved sunsets. She will be greatly missed by all who knew her. She is survived by her parents, Mijiddorj Jigjid and Khishigbayar Jamiyansharav of Fort Collins; a younger brother, Gerelt-od ""Miki"" Mijiddorj and a younger sister, Maralgua ""Mimi"" Mijiddorj, both of Fort Collins; her grandparents and relatives of Mongolia.A Memorial Service will be held 4:00 p.m. Friday at Resthaven Funeral Home. A graveside inurnment will be held at Resthaven Memory Gardens at a later date. In lieu of flowers, Memorial Contributions can be made to the Sisi Mijiddorj Memorial Fund, 2215 Haymaker Lane, Fort Collins, CO 80525.