Write a story in the NAME_1 universe. NAME_2 is playing with her cunt with her wand. Unexpectedly, she activates a spell that starts to turn her to stone, it speading through her body. NAME_3 notices this and is intrigued, happily watching NAME_2 petrify and taunting her. After NAME_2 is done, NAME_3 gets naked and plays with the statue sexually. This is noticed by NAME_4 and he decides to punish his naughy sister with the same method - he rubs her pussy with a wand until she orgasms and petrifies too