Keep an eye on her crop to make sure that it is emptying by early morning. Probios Dispersible Powder is a good source of probiotics that may help with intestinal health. Sometimes I will use a small amount of buttermilk, raw egg, then mix it into chicken feed for a good high protein snack...
Did you get her Xrayed to find the fractured pelvis? It can take a couple of weeks to a month for broken bones to mend. I'm glad that she is eating well. I would probably make sure that her layer feed was 90% of her diet, since it will be balanced with protein, vitamins, and minerals. The...
Sorry about your chicken. It sounds nerve-related, so Mareks does sound like a possibility. An injury may also be possible. But I would try poultry vitamins (including BS or riboflavin) since that could be a possibility. Please read the links below...