Keep watch for fever, as that is a sign things aren't going well. But, I can tell you from experience that having a "wound" from surgery like this takes a long time to heal, but it DOES heal! It might be a few weeks, but don't despair!

During surgery, when everything is germ-free, the stitches keep out the infection. But after being out in the world, if the wound opens up, they have to be very careful not to trap infection inside by closing the wound up again. She will have a scar, most likely - but she will heal. Keep giving her good food and lots of love. And be patient through this scary time.

Best wishes from someone who has been through this!