She's still with us. We believe that she ate the egg because it was cracked. As far as we know, there have been no more eggs consumed by chickens.
I know, you hardened chicken people are laughing at us.
We do have two hens in solitary confinement because they won't stay out of the neighbor's yard. We instituted a "Two Strikes- You're Out" policy. The first time, their wings were marked with spray paint. The second time, they were placed in a cage. Now they are awaiting a new home with either Grandma or a friend.