I don't think you need to worry about her gaining weight bc she's only 6 months old. She should be getting as much as she wants to eat for her age since she's still growing (follow the instructions on the bag of her food).
Weight is something to worry about when they reach 6-7 years old, some dogs start packing on the #'s.
As far a treats, I stopped buying store bought treats a long time ago. My guys will occasionally get cage free egg whites pan fried in coconut oil, veggies of all kinds (no onions), they esp like frozen thawed green beans. Fruits like apples (no grapes), baked sweet potatoes. Many people dehydrate & make their own fruits, sweet potatoes & chicken jerkies for dogs. I want to get a dehydrator for Christmas!
