Did the vet put in removable ones or dissolvable ones? Has she been picking at them while you are home? You might want to give her some new toys to play with tomorrow to keep her mind away from biting the stitches when she’s bored. 9 days is a good amount of time for having those in, usually are taken out or dissolved within 14 days so it wouldn’t be an issue if she pulled one or two out. To make sure to check when you get home and see how it looks, and if it’s red and inflamed then call the vet and they might give you SSD cream to put on it.
My girls never played with theirs so I wouldn’t be too worried for yours.