Sooner or later she is going to pick up some parasites doing that. I tend to play the percentages, nothing is perfect, but if you can get her to cut down some it would likely be beneficial in the long term. A Tape Worm might stunt a pups growth.
The only thing I really worry about is Fox and Yote poop, they can give your dog a parasite that is pretty much incurable and can spread it to you.
I test my dogs a couple of times a year, a stool sample three days running. Been lucky so far, the only parasites they ever got were Roundworms.
Funny story about that, had a dog that was really athletic, she could make some really impressive leaps running flat out. Horses came by one day and dropped a load, she wolfed down a couple of handfuls of road apples jiffy quick. She runs up the road and then comes back running full out, leaps through the air and kisses a buddy of mine right on the mouth while she is flying by. My buddy turns to me and smiles, I see the green ring around his mouth. I swear that dog did that on purpose, I was laughing like crazy and the dog was standing there with a big grin on her face.