Lucy is healing very nicely! It's been almost 3 weeks since we intervened and began treating her. The first sign of healing was her comb's little scabs falling away and revealing fresh, new, pretty comb underneath. Her feathers are still coming back in and her scalp might be a bit mis-formed for the rest of her days, but this little lady has hardly skipped a day laying. What a trooper, I say!
I guess I feel as though surviving a trauma or life-threatening injury would be plenty reason for the body to reject the idea of creating and passing eggs, but darn if these birds aren't resilient! She's still waiting to be reintroduced to the coop, but they've had visitation through wire for almost a week now. Still keeping my fingers crossed!