That's probably a bit too much exercise for a puppy of her age, especially since she's not used to getting much exercise at all yet I'm sure. Once she's an adult that'll probably be fine but for now try to keep it a bit lower I also feed my dogs the Nutro's Natural Choice (lamb & rice), that's all Tango can eat without getting sick it seems and she aswell as my Dobes do really well on it. You can get it at any pet store I'm sure, I get mine from Petsmart. I'm constantly getting comments one how beautiful their coats also. The same company makes puppy food but she's not really considered a large breed so try to stay away from the food made specifically for large breed dogs and stick with the regular puppy food if you think you'd rather feed her the puppy food instead of adult. I have barely any experience with puppy food as it's been forever since any of my dogs have eaten it, so hopefully someone else can give you their opinions. Good luck with Zoe! Sounds like she's going to have a wonderful home with you