Sandra Renae Arnold, 56, of Great Falls, passed away Saturday, February 20, 2016.Sandy was born on January 21, 1960 in Dickinson, North Dakota to William and Irene Arnold. She was raised in Great Falls, MT. She married Jeff Mancini, and they were married for 25 years, living in Idaho and Superior, MT. They later divorced.She enjoyed doing puzzles, eating out and going to the park to feed the ducks. Sandy was friendly, kind and fiercely loyal to her family.Sandy is survived by siblings, William P. Arnold, Kelley D. (Joy Renee) Arnold, Penney (Joe) Salano, Darla Kay Arnold-Lay, Ryan P. Arnold all of Great Falls, Wanda J. (Art) Jorgensen, Laura E. (Darnell) Ludwigs of Florida and Kevin S. (Karen) Arnold of Washington; as well as numerous nieces and nephews.She was preceded in death by her parents and sister Wynne E. Martin.At the time of her death she was a resident of Eagles Manor retirement community where she had many friends. Of particular importance in her life, was her special friend, Charles Klassen.A memorial service will be held at 2:00 p.m. on Thursday, March 3, 2016 at Faith Center, 4700 10th Ave. S., Great Falls with Pastor Nick Gough officiating. Burial of her ashes will take place at Highland Cemetery following the service.