SD wants to watch Addie Juniper cum. She has her tied up because after a few orgasms her clit will be so sensitive she will beg to stop. That is when the real fun begins. The only alternative to more orgasms is to suffer. If Addie wants to avoid the whip she will need to keep performing enough to keep Sister Dee interested. Any time she is not cumming Sister Dee is going to want to hear her scream