> This spring she is laying a good solid egg patern, but none of the eggs hatch.

The eggs may be hatching but the larvae being eaten by the nurse bees. This can happen if the queen is mated with a closely related drone. The eggs are fertilized but they are homozygous at the sex loci and turn into diploid drones instead of diploid females. 

Drones are normally haploid (unfertilized). I have never seen what you describe, but naturally I have seen scattered brood which can result from a mix of worker and diploid drone eggs. The workers apparently "sense" that the drones are polyploid and reject them. 

Woyke developed a method to keep them alive long enough to mature, proving that adult diploid males could occur, if they weren't aborted by the nurses, which they normally are.

PLB

Woyke, J. (1963). Drone larvae from fertilized eggs of the honeybee. Journal of Apicultural research, 2(1), 19-24.
Woyke, J. (1963). Rearing and viability of diploid drone larvae. Journal of Apicultural research, 2(2), 77-84.
Woyke, J. (1969). A method of rearing diploid drones in a honeybee colony. Journal of Apicultural Research, 8(2), 65-74.
Woyke, J. (1980). Genetic background of sexuality in the diploid drone honeybee. Journal of Apicultural Research, 19(2), 89-95.

&c

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