She is still young so expect her to be somewhat unbalanced but the only way she can learn is to keep trying and believe me she will get better. It is so much better for them to remain flighted, especially when so young because it builds confidence and gets the muscles required for flight prepared to take on that task. Give her more time to become settled into her new home, you only just brought her home and grey time moves slow so be patient as she develops into a blossoming flower, an expert flyer.