Followup, two years later, still the same. She's healthy, going strong, has been laying eggs steadily (around 16 per month). About half the time she drops the egg either at night from her perch or while walking around, thinking she's pooping. Sometimes the bedding (pine shavings) catch the egg without damage, often they have little cracks- usually a soft spot in them. Some of the eggs are real long and lumpy, others are better shaped. Only about 1/3 are really good standard looking eggs.
We often give her some cheese for extra calcium, she enjoys that, and it does have a beneficial effect on the egg shell quality.