This is a two-and-a-half year old female. She was just just given her walking papers by her mom. This is normal for grizzly bears. This happens to black bear cubs at age one-and-a-half.
She was very nervous, constantly looking over her shoulder. Mom was no longer there to protect her and she had killed an elk calf which lay nearby and which other predators, including bigger bears, could smell.
Finding the calf shows she has learned an important skill. I think she’ll do okay surviving on her own.