Severus has fallen for James Potter's younger sister. He wants nothing more than for her to accept him. James wants him to stay the hell away from her and for her to go out with Sirius. She's never been one to follow orders though. Marauders era

It's hard to keep a promise to help someone when you don't know what they're doing. That's exactly what she did though. She sacrificed so much to gather what she needed so she could keep that promise to help her cousin. She wasn't supposed to fall in love with him. It wasn't part of the plan. Now she must choose. Save Draco or save Severus. Maybe just maybe she can save both.

What would happen if Sirius Black's twin sister fell in love with Severus Snape? Well, for one they wouldn't get along. Artemis doesn't care what her brother thinks and neither do her parents, but will they accept Severus or will they disown her?