Lost & Scared: Help Find Our Great Pyrenees Mix!

She is a Great Pyrenees mix with blue heeler, she is white with a mostly brown face, she is wary of people and may run from you but she will warm up to you, they had gotten out through a gate in our backyard my fiance and I were out of town and had some friends watching them unfortunately the gate didn't close all the way and both of our dogs got out, we found our other dog but she died shortly after getting home from being stuck by a car and internally bleeding, sage was last seen near her sister running south on union and filmore but she was last seen there at 1030 last night 7/3