Spies can't have true relationships with others. Relationships become weaknesses. But a wartime distraction becomes a weakness before Severus Snape can stop it. SSOC. Set from OotP through DH.

She had loved Bill Weasley all her life. She had never loved another. But then there was Severus Snape. SSOC.

Severus Snape doesn't want to take care of a child, but his newly orphaned little sister needs a guardian. Little does he know, he needs her, too.