Lula is the one you want. Have her bring it herself.

Cassette: id love to see you again :D
V: Haha of course. I'll be by later.

You wait, watching the DMs but nothing else comes. You tidy the flat frantically, agonizing over what to wear. You're clothes are woefully under sexed you decide, and quickly order some more stuff online for next day delivery. Still she doesn't come. You masturbate, hard, the thought of her touching you, your bodies pressed together keeping you horny for hours. Finally, with a resigned sigh, you head to bed, naked from head to toe and yet tossing the blanket to the side. You don't feel warm exactly, but the cool feels good on your skin. You're not tired either, you find. You stare at the ceiling, hands on your chest. You are contemplating rubbing yourself again, when something touches your foot. You look down to see Lula, a dark shadow at the foot of your bed, her strong, pale arm grasping your ankle the only part of her in the moonlight. Her eyes flash silver. She leans forward, sliding up the bed with catlike grace. Her face enters the light, her sheet of white hair concealing half of her plump red lips. You see her shoulders followed by her swaying breasts, tight stomach and shapely butt. Her long legs straddle you and her hands caress your thighs, waist and breasts. You gasp as she holds herself over you, her face directly above yours. You begin to say something but she puts a finger to her lips. Shush. She leans down, kissing you sweetly, her tongue opening you up, exploring you. She slides free, kissing down your neck, your collar bone, your breasts. Her tongue slides over them, her lips and teeth pulling at your sensitive nipples softly. You gasp with each tug. She holds your right nipple in her mouth, then pushes her fangs in, eliciting a long moan from you. You toss your head as she drinks for a moment, before withdrawing. She kisses between your breasts, your navel, your belly button, the top of your pubic hair. She caresses your thigh with her tongue, her hands gripping your buttocks. She draws her fangs over your thigh skin, the pushes in, tasting you for several gulps. She pulls back, kissing your labia gingerly. Her tongue separates your fold, and you arch your back as her upper lip brushes your clit. She slides her appendage in slowly, penetrating very deep within you. You claw the bed and your bitten breast, gasping with every milimetre. The skin feels sensitive and cold under your hands, the flesh plump and soft. She bottoms out, her lips within your pussy now. Her teeth grazes your clit, making your body hum. She pushes her tongue against it, keeping the pressure of her lips going. You arch your back and scream. The tips of her fangs graze your insides, you feel their points poised. To get the full pressure on your clit, she'll have to bite you deep.
"Do it." You gasp. "Do it!" You shout.
She responds, sliding her fangs slowly in. You scream the whole way, your back arching hard. She sucks at your blood and clit simultaneously. You feel the hot liquid rush over your fiery clit, and a flood of cold spreading from your crotch. You look down to see your breasts expand to their final size, your stomach flatten with ab lines just under the skin, your thighs grow lean and strong on either side of Lula's face as she watches you, her beautiful body stretched out behind her in the moonlight for you to see. Your eyes roll back in your head as the transformation takes hold with the most epic orgasm of your life, Lula finally extracting herself from your spasming vagina. You gasp and writhe for sometime, Lula watching patiently, a wry smile on her face. Finally, you stop. You move to kneeling, running your long tongue over pointed fangs and staring at your clawed fingers. Lula lounges to the side, head in one hand, body on display. You look at her, all of her, and lick your lips.
"You want me Cass?" You nod.
"You can have me." You don't hesitate. You push your body into her leg, tongue travelling up her thigh as you search for her sweet spot. You snake inside her, her shaved pussy accepting you with ease. She grabs your head, fucking herself on your willing mouth, her legs draped over your shoulders. You enjoy each other's bodies sensually for many hours, barely a word passing between you, until she leaves you, splayed out on your bed dripping with her juices.