I'm sorry for your loss!
Keep her safe in the coop with water and food. Some electrolyte water might not be a bad idea (along with fresh, plain water). Glad to hear she is not injured.
Chickens are social, so for long term, she will need friends. If she goes to another flock, she would likely have a tough time integrating, since she would be the only new bird. It could work, but integrating a single chicken into an existing flock is usually a bit more challenging.
You could buy some chickens similar in age to her, or some started pullets from a hatchery.
You may also have success if you got chicks and raised them separately, but within view of her for about 4-6 weeks in a see/hear but no-touch situation, then integrate her and the chicks.
Good Luck.