Gravid = pregnant, lol. Wow, so....unless there's a magical milk snake living behind my daughter's dresser I don't know about, there's no possible way she could be pregnant.

My initial thought was something...her getting loose/being away from her heater maybe, caused her to develop eggs with the hope of getting fertilized. I always thought snakes weren't that far off from chickens....they lay an egg whether there's a rooster involved or not. Right?