Casey doesn't exactly mean to lie to anyone, she just, sort of omits the step sibling thing when she talks about Derek. She doesn't know why, it just doesn't come up. And maybe she wants to know what it would be like to not be his step sister. That's not a crime. No really, it's not illegal. M for later chapters

Hermione makes a wish to skip to her "happily ever after" while being tortured in Malfoy Manor. She wakes up seven years later lying next to... Draco Malfoy?