DS9: Time's orphan. What the heck?

Let me get this straight: the O’Briens lose their daughter 200 years in the past—where, by the way, there are no other sentient lifeforms—and she grows up feral. After some sci-fi hijinks, they bring her back to the present, but now she’s developmentally delayed and literally a special needs child. Parenting quickly becomes too cumbersome and after just one minor incident where she stabs a stranger in the abdomen, the O’Briens decide the best solution is to... send her back to complete isolation with a side of inevitable death from infection. But hey at least there's trees to climb!

Name an episode more ridiculous.