Give her the best orgasm of her life

I kissed her thigh again. "God you're so dirty, Alice! Begging your older sister to make you cum. Such a filthy slut you are." I bit down hard right above her pussy, careful not to leave any permanent marks. "But in your dreams, I know who you are, and I totally accept it. I know you're a fucking slut for your sister and I love it, Alice."

Alice moaned, as I assaulted her skin.

"Now cum you sister-fucking whore."

And I set to work, furiously using my tongue on her entire pussy, from her clit to her base. I lapped up every inch of her soaking wet cunt, tasting her sweet nectar, all while she writhes under me.

"Oh fuck yes Christy! Please Christy!" Her voice was getting loud, and I thought Monica might here, but I couldn't care less. Alice was mine right now and that's all that mattered.

I made circles with my tongue around her swollen clit, pinching it to uncover it as much as possible. "Yes! OH FUCK yes! Alice I'm gonna cum! Fuck, sis, I'm going to fucking cum!"

"Yes you are," I said, pulling away for just a second. Alice gasped as I slid two fingers into her wet slit. "Cum for your big sis, Alice!"

"AHH AHHH AHHAHH!" Her moans were unmistakable now, and I just had to hope the walls were thick enough. The combination of my fingers and my tongue pushed Alice over the edge. My beautiful little sister finally unleashed herself, and explosively climaxed.

"OH GOD OH GOD MMMM!"

"Oh fuck," I couldn't help but say.

Her pussy clenched and spasmed, her entire body rocked. It was almost dangerous to have my face near so much movement, so I pulled myself up and wrapped her up in my arms, letting her finish her orgasm. Alice leaned into my body, as she continued to moan, "Oh god, oh my fucking god."

Her quakes continued for a while longer, but eventually she shuddered still while I held her. "Oh my fucking god," she whispered one last time.

"Shh, Alice," I cooed. "You did wonderful, Alice."

She just snuggled into me closer. "Thank you, Christy." Then she yawned. "I wish I could have this dream more often."

I kissed her forehead, it was clear she was going back to sleep, and I was tired myself. "Maybe one day this won't just be a dream. Maybe you can have this when awake."

Alice yawned again. "I don't... know. Christy doesn't see me as anything more than just her little sister. This is just... how it is."

"Maybe, but it isn't how is has to be."

"Hmm, interesting." And with that, she was asleep again. I tried my best to fix her clothes, wipe off all the remaining spit and pussy from my mouth, and soon I fell asleep as well, content in my incredibly naught knowledge.