CJ Fowler's body was discovered Dec.5, 2012 in a ravine in an undeveloped area of a Kamloops neighbourhood.
"We're all just shocked, you know for her life being taken like that. We never thought it would happen to us," said her aunt Gloria Hill.
Fowler, 16, was a member of the Gitanmaax First Nation in Hazelton, B.C. Police believe she was in Kamloops visiting friends.
No arrests have been made.
Hill remembers her niece as a sweet girl who loved being with her family.
"She had this little spirit where whenever I ran into her, she would have this really beautiful smile."
Family copes with second tragedy
The funeral will be held at Kitwanga Thursday afternoon, but the family's focus is torn between Fowler's death and a separate family tragedy.
Over the weekend Fowler's 20-year-old brother, Dustin, was hit by a car and is now in hospital recovering from a brain injury.
Hill says they are trying to put their anger from Fowler's death aside, and focus on Dustin's recovery.
"I believe that if our anger energy carries on, [it'll] be not healthy enough to give Dustin the energy to heal himself," she said.
RCMP release surveillance photos of Fowler
On Wednesday, RCMP released new photos of Fowler taken just hours before they believe she was killed.
The photos are from a surveillance camera at Royal Inland Hospital in Kamloops, taken just before 3 a.m. PT. Police believe she was killed before dawn.
In the image, she is walking down a hospital corridor, wearing a bright pink tank top, jeans, and a black and grey plaid jacket covered by a larger green jacket.
Anyone with information is asked to call the Kamloops RCMP Detachment or Crime Stoppers.