the grass will make her tummy bloat . Try letting her out on the grass for feeding time , like 1 hour in the morning , then off the grass , and again 1 or 2 hours late in the afternoon, and again at night for an hour or so . Maybe that will help . You can measure her , and keep re measuring every week . you can also put her on a feed program that will not bloat her belly. There is a lot of suggar in pasture grass, this is why horses like Shetlands get laminitis .. I would allow her 2 hours of pasture grass a day max, once in the morning before the sun shines , and again in the evening. I would keep her in a dry lot , pen maybe 20x20 feet if you have it , no grass , during the day , with shelter from the sun , and a few things to play with .Add a feel , remission is the name of a feed that is a sugar reducer , it will help keep the horse from foundering . Purina also has a great pony , shetland feed . Look me up on Facebook , and I will introduce you to some feed experts with purina : ) , they will help you find a healthy , alternative to pasture grass. I look at pasture grass as an appitizer (sp) its full of nutrition , but also very rich , so just a few hours a day will be enough . Kristen Torkington (on Facebok ) she is a pretty little horse , and someone took very good care of her , maybe you can hardship her into AMHR , or get your daughter involved in the clubs , they are a lot of fun , and when she outgrows Nugget , she can still show her , or drive her ...