Your vet should have given you instructions for after-care. I remember having to wash my girl’s incision site daily with Dial soap (antibacterial). Keep the incision site clean and disinfected. Also, keep your girl kind of quiet until the site heals.
Ensure your dog rests comfortably, monitor the incision for any issues, prevent licking, administer prescribed medication, and follow vet instructions closely for a smooth recovery post-spaying.