I’m a little confused. Did you take your blocks and a green fabric to someone and ask her to put together your quilt top then quilt and bind? Or did you make a quilt top and take it to her to quilt for you?
If she was just supposed to quilt it for you I would take it back and ask her to remove what she added and fix it.
if you asked her to make the top for you maybe she added what she thought would work to make it the size you wanted? Lots of unknown information here.
you of course can cut off anything you want and redo as you want, it’s yours.