NEW : Photo montage taken at service for Sandra at a high school in Tracy . Girl , 8 , disappeared March 27 ; her body was found in suitcase on April 1 . Police arrested Melissa Huckaby , 28 , and charged her with killing and raping Sandra . Cindy Sasser , principal at Jacobsen Elementary School told mourners , `` We should all strive to be like Sandra -- always smiling , wanting to help , to look out for others and to be caring . '' If convicted , she faces the death penalty or life in prison without parole .
NEW : Photo montage taken at service for Sandra at a high school in Tracy . Girl , 8 , disappeared March 27 ; her body was found in suitcase on April 1 . Police arrested Melissa Huckaby , 28 , and charged her with killing and raping Sandra . If convicted , she faces the death penalty or life in prison without parole .