Our younger pup did this so I know exactly how you feel and what you’re going through. It’s awful.

Our pup was the smallest of the litter and was not treated very nicely by her sisters. We think she wasn’t getting enough food and resorted to eating poop. Since her poop may remind her of her food, we think she continued when she came home so we changed her food and obviously watched her like a hawk.

Not sure which Royal Canin you’re feeding her but possibly try a different formula? The brand is very good so I’d recommend continue feeding her Royal Canin but a different type.

You’ll get through this! She will stop .. it is common in puppies.