Is she acting ill? Be sure to keep the bedding stirred, as dry as possible, and add new pine shavings as needed. Being confined, they will be more exposed to droppings. Clean her vent up, trim any excess fluff, and if possible post a picture. Electrolytes for more than several days could cause runny poops. Your vet may agree to do a fecal float on some droppings, and possibly a gram stain for other organisms. Probiotics are always a good idea. Grow2max is good online, and there are some at feed stores, such as Probios powder, as well a plain greek yogurt or buttermilk. Feel of her crop early in the morning to make sure that it is empty and flat, or she might have a crop problem which could also trigger diarrhea.