Try to tell them what happened

"Guys, something's wrong," Marnie says. She touches the amulet. "I … I found this thing in the collection, and I put it on. And then … well, you probably won't believe me." But it's worth a try anyway. Marnie briefly explains what happened to her in the reading room and the restroom of the institute.

Katie's expression is rather incredulous. Then she smirks. "Nice try, sis. I'm not that gullible." She reaches over and touches the amulet for a moment. "It's a nice stone though."

"I'm serious!" Marnie says. "This fucking demon is trying to get me to change you, corrupt you."

Something in her tone makes Katie's confident expression falter. "Whoa. Calm down, Marnie. Seriously, what gives?"

"Look, I can prove it!" She holds up her hands, palms inward. "Look at my nails. They were shorter this morning—how could they have grown so quickly? Stephen, weren't my nails shorter?"

Stephen shrugs. "To be honest, I can't remember what your nails looked like this morning, sorry, Marnie."

Foolish pet, Uhazral snickers. You can't possibly hope to enlist other mortals in rebellion against me. Even if this were still an age of belief instead of skepticism, none have the power or will to resist me. And now to punish you for this insolence….

Marnie feels her chest growing heavier. Her breasts are ballooning outwards. They stop at a still-respectable, somewhat ordinary C-cup, but they are noticeably larger and firmer than before. She feels her ass tingle as well as it swells out a few inches, and her dress and tights are now pleasantly snug around her new bottom. Finally, her brunette hair darkens until it is almost black and grows several inches until it is well past her breasts.

"Look!" Marnie cries. "It just made my tits and ass grow!"

Katie and Stephen share a worried look. "What are you going on about, Marnie?" says her sister. Meanwhile, Stephen has come around to the back of the couch and places his hands on Marnie's shoulders, massaging them lightly. "Yeah, babe," he says, "you know I've always loved your body's tight curves."

It seems that while Marnie perceives her body as changed, the others believe she has always been this way. Out of the corner of her eyes, Marnie spies a photo from her and Stephen's trip to Cancun. Sure enough, in the photo her tanned breasts are large, ripe C-cups threatening to spill out of her bikini top. Her hair is slightly shorter but every bit as dark and straight as it is now.

"I can't believe this is happening," Marnie says.

Dinner is a little more awkward with Marnie's distressed mood. Katie excuses herself as quickly as possible, claiming she has to study for finals. That leaves Stephen and Marnie alone.

He puts his hand on Marnie's. "I'm sorry something is bothering you, Marn. Is there anything I can do?"

Oh, yes. So much you could do for poor Marnie. And don't try to deny you don't want it, my pet. In this respect, our interests must certainly align.

Marnie eyes her boyfriend's toned, athletic body. Despite his chosen career of IT consulting, he maintains an active lifestyle doubtless influenced by his parent's strict, schedule-oriented upbringing. He's an attentive boyfriend and lover, and she can't complain about their sex life … but it still leaves something to be desired.

Now she knows she has the power to do something about that. She could do anything she wants to his body. Bigger cock, more muscles, less body hair … anything. Same goes for his mind: she could wrap him around her little finger and turn him into a willing **** who only lives to service her now curvy body. Or she could go the other way, bring any latent dominant tendencies to the foreground, make him the master.

And if she refuses again, doesn't make a choice, then Uhazral will do something else to her. It has already enlarged her tits and ass, so what would it do next? Make them even bigger, comically out of proportion to her petite frame? Or would it tinker with her arousal, turn her into an animal in heat, make her start begging Stephen to fuck her on the table? Marnie shuddered to think what fate it would inflict next if she decided not to alter Stephen.