Let's preface this with the statement that medical advice for anyone, dogs or people, really shouldn't come from online. In this case, I don't know how long the incision is, the time duration since the surgery, the current size of your animal, the animals current temperment etc. All these, and others, are relevant factors that greatly influence a reasonable opinion.
From an initial glance the top stitch is too high and already showing signs of coming loose. The others were poorly placed in how the flap joins. I won't be a problem since it's obviously holding together and connective tissue doesn't take too long to rebuild, but the scar could have been prettier. Personally, I would have put in more stitches for a cleaner scar and a better appearance. At the same time, I did an internship in micro vascular surgery with a plastics group, we worked on human techniques and I'm a perfectionist.
It looks like there is some localized infection. I would keep my eye on it to see if it gets worse, but it's normal to see some around any surgical incision regardless of antiseptic technique and follow on antibiotics. If it gets noticeably worse or you notice any change in your dogs personality, I would take her back to the vet.
All in all, I've seen much worse.