Her crop doesn't look pendulous to me, just full. At her age, reproductive problems are not uncommon. Those can include cancers and infections. They can cause digestion to slow, and crop stasis is a symptom. If you have never wormed her, then I would be inclined to do that, to rule that out as an issue. Worms can sometimes cause crop back ups as well, and dirty vent feathers. You can use Safeguard liquid goat wormer, Safeguard horse paste, Valbazen. If you decide to worm, let us know what product you get and we can give you dosing.
