Your Sister has never been very nice to you, when you shrunk you had hoped that somebody would find you, anybody but her, but of course, she was the first one to walk in and made eye contact with you right away on the chair you had climbed to get someone's attention... someone other than her.
But as she approaches you and the ground shakes with her every step she offers to help you. This surprises you and you sense that she's up to something but in your current state you wouldn't be able to deny her anyways so you're glad for the help. She then offers to keep you somewhere warm and safe before turning around and shaking her fit, tight, giantess ass in front of you... She has no pockets on those skin-tight leggings and you fear what she might have planned. Your fears become a reality as she continues to tease you and drops you into the back of her leggings, your screams rendered silent by the warm skin blocking your mouth. Despite your unheard cries for help she continues to tease you and dance for you until she gets bored.