you hear a soft moaning across the hall. You know you shouldn't but you get out of bed anyway and creep across. Slowly opening the door just so you can see, your sister laying in bed, tossing and turning. She awakens and reaches her hands into her pants and begins to rub slowly. She moans quietly with pleasure before tasting herself. She pulls out a toy you've never seen before and starts pressing it against her privates. She throws her head back and opens her mouth while moaning, showing you and glimpse of her brace. You feel wrong but you can't stop watching but you can't keep still any longer and she catches you. Will your little sister be angry or ask you to join in.