Some suggestions. ..
You want her to run... she needs the exercise. There is a difference between running and chasing. When she runs the livestock will run too... That's OK as long as she isn't chasing them. .. Big difference.
Sniffing is good. .. poop eating is good. I would not fuss at her for either one, it is all patt of how she learns, bonds, and communicates (don't worry. .. The poo eating will pass and will not hurt her - they all do it).
Most importantly. .. Do not take her anywhere you don't have to. .. no fun trips to petsmart etc. If she HAS to go anywhere I would only take her to the vet. .. No side trips.
Most collars are adjustable these days so the collar my 8 month old 80 lb pup is wearing is the same one he wore at 3 months. He has finally maxxed its expansion so I just did switch him to the one he will wear from here on out. Just a hint. .. In case you ever get another lgd. .. Make each dog a specific color for life. If you ever have to leave town and leave someone to fool with them you would be surprised how others cannot tell them apart. Any time I need someone else to feed i simply tell them that orange collar gets 3 cups, pink and blue each get 4, And purple gets 6. People get my dogs mixed up all the time... which amazes me but can be very important. .. especially with neighbors who love to reach through the fence and pet orange color but they know pink collar will eat them. ;-)
They are very smart so it is so tempting to "train" them. .. especially for an obedience competitor like myself. But I've learned over the years that you DO NOT want them focused on you more than the stock. So I don't teach them things with treats.
NO cookies ever! This will create more focus on you than her livestock. If you go out to work in the garden and the poultry is 2 acres away you want her to stay with her poultry not come to you - that's just one example. Mowing or bush hogging... Or any other outside activity. She shouldn't be drawn to you. She will love you... You feed her afterall. But you want her to love your livestock more. Calling them at feeding time is enough of a "come when called" command. Other than "sit" while I put their food down, "off" meaning no paws on me, walking nicely on a leash, and "wait", I teach them nothing else. Wait is the most critical... they are not to go through an open gate without permission.