If she is getting emaciated, as the title says, then she needs more food.We have been giving her small amounts of soft foods
I might try offering free-choice chicken food (pellets or crumbles) and see how she does. If she is able to digest it without her crop clogging up again, then letting her eat as much as she wants will be the fastest cure for the emaciation.
I mention pellets or crumbles because they are made of already-ground-up bits. They get soft and fall apart when they get wet (like when the chicken drinks water), so they will hopefully be able to get digested without being stuck on the way.