Conley was walking with friends along the 10600 block of South Lake Stevens Road around 11:18 p.m. last Saturday in Lake Stevens.
She was shot by a person in a passing vehicle, police said.
“She always smiled, she gave people smiles, and she was joyful and kind. She had a generous spirit,” said Conley’s mother Susan Arksey.
The Snohomish County Sheriff’s Office is investigating the shooting.
No arrests have been made.