I'm not experienced in donkeys, but I would think that her bag will look a bit fuller than it's probably looking at the minute. I'm not sure that they get a really full bag like the minis, but we'll just have to see. They may hold their bags closer to their bodies, but I'm sure she'll have a good supply for baby -- even if it doesn't look full to us. I know in people.....size doesn't really matter. Even the "smaller" ladies still produce milk like cows!! My daughter was a great example! LOL