You don't need to and, in truth, it's better for her if you just allow her to make up her mind about it because, unless a bird is clipped (which makes them feel terribly insecure, anxious and stressed out), it will always want to fly around -especially the little ones, they just love to zoom around
The hard thing is getting them to go back into the cage but it''s not that hard to train them if you have the time and are patient about it.