Is 35-50 according to the breed standard? The standard for Shelties says 14-18 pounds but there is just no way that Kai could be healthy at 18 pounds. The Vet said Kai's ideal weight would be 35ish or so... standards aren't always that reliable.

But if she does look a bit overweight to you, try reducing it by just a smidge and adding maybe 5 extra minutes to her walks. In the long run, it'll probably help her lose the extra couple pounds.

what do you feed your dog/s?
They're back on raw. I'm going to weigh them today to see how their weights are doing.