If she will be staying in a spare room I would put in on the end table or even on the bed (light a piece of chocolate you find in some hotels).
Put a sign on it something to the effect of
"Sew glad you are here - Happy Quilting on your new machine!"
Add a small kit/project for her and you to work on together while she is there, or coupons for a shopping trip.
However you present it to her - enjoy your weekend!