Go quietly to your room.

You're so upset that you'd rather not find out what's going on down there. Instead you turn to the left and ascend the flight of stairs to the second floor. You creep up, skulking around your own home as usual. In your head you picture yourself as your high-level rogue, sneaking around dangerous elfin tombs. As you arrive at the top of the stairs you realize you're half right.

You hear movement in your older sister's room, even though she's two years older and should be off at college. You realize you must act quickly to avoid detection.