If she's not on the floor then she may be okay. If she starts sitting on the floor only, then she's in trouble. She doesn't have the strength to perch.
Is it cold in the room she's in? Is her pal a male? Is it possible that she's getting ready to lay eggs? Is she nesting?
I know, a lot of questions. I'm sorry I have to ask so many, but since I can't see her, I have to get the full picture in order to give you advice.
She's not a young bird. Most parakeets live between 5 and 10 years. Ten years is rare.
