Quarantine is very wise, and certainly is a good idea. However, I'm more one to take a chance to make the animals comfortable and introduce them sometimes sooner than suggested. Maybe its not the smartest idea, but that's how I do it. You can choose whether to take the risk or not.
That's awesome that you could help her out!
Because she is so tame, you may want to check that no one is missing their pets or layers in the area.
Then you put her in a wire pen near the others for a week or two. When they are use to each other you can open up the cage and let them mingle...