She isn't so sure...yet

"Get off me, fucking demon creep!" Nancy screams, punching your stomach and wriggling her pinned legs.

"Ah, a fighter, I see. You'll find submission much more pleasurable than struggle; I assure you," You purr, your long tongue sliding across your fangs, cock hardening in anticipation.

It is clear that Nancy realizes that fighting is entirely useless when you feel her slacken under you. Desperately she turns to her friend. "For fuck's sake, Becks, I brought the goods, I don't know what this monster has done to your head, but you can't just let him do this!"

"Ohhh, but I can, Nance, I can." Becky responds, eyes flashing dangerously. She slinks towards her friend, still trapped beneath you, and removes her tail from her pussy, coated in slimy, virus-ridden juices. "This is so much better than dope, honey."

"Becks! Please don't do thi-" Nancy never finishes her plea, silenced by Becky's tail driving down her throat.

You are pleased with Becky's initiative, but, not to be outdone, you rip off Nancy's leggings and panties and flip up the frill of her dress. "This is so much better than ****, Nancy!" You roar, slamming your rod into her pussy, finding it already wet from the virus Becky has passed to her friend.

"FUCK YES!" Nancy moans, clearly high with the Lilith Strain. Becky removes her tail from her friend's throat, dripping with black cum and leans down, locking lips with Nancy in a scorching kiss.

"Time to see what you'll become, slut!" You shout in triumph and jet a load of infernal cream into Nancy's womb.