She should be fine with the antibiotics. As long as the incision site is not oozing or swollen it should subside over the next week. If it remains swollen and/or if she goes off her food or playing, go back to the vet. To keep her from tearing out stitches, a baby T-shirt (cut off the top of it to make a tube) or large sock should keep her from biting at them.....but it should be slightly snug but not too tight and of a material (e.g. cotton) that breathes.