Hi Linda, welcome here. SilverStarr is a beautiful name for your girl. Have you had her long?
A vet check is usually the first step in plucking issues, once a vet has ruled out physical causes then you can move on to other issues. Do you bathe/spray your grey regularly? Many of us use aloe vera juice to spray our birds, it helps with dry skin and itchiness. You must also think if anything has changed in your environment to cause the plucking, any new pets, new furniture, change in your schedule? Try not to react at all to the plucking, she will take this as attention and may continue just to get your love. I hope you are able to get this under control before it gets worse. Best of luck to you!