Oh no That stinks I'm afraid it probably wasn't anything you did. Sometimes they just lay slugs. I don't know what's worse, your scenario, or mine earlier this year. I had 6 eggs make it to the end, 2 super cinnys included, and they almost all died as soon as they came out of the eggs, even the super cinnys
Im really sorry to hear about your loss
I really think your scenario was worst than mine because you already had the babies with you