Alice tells me to keep going

Frozen as I was, with my hand in my little sister's damp hole, I was completely unable to react. Luckily for me, Alice does for me.

Her face, blushing hard, looked right into my eyes. Her pretty blue eyes are filled with desire. Amidst the sound of the shower, all she said was "Keep going, Christy."

That was all I needed. My fingers slipped in deeper, as Alice began to moan in earnest. God she sounded so sexy. I never realized my little sis could make these noises, but I loved all of them. I needed to hear more.

I slip another finger in, making three fingers exploring my sister's precious sex. And clearly she was enjoying it. She began to lean on me, using me to hold her up, while she lost herself in the pleasure. After a point, she bit my shoulder, which I let her do, despite the pain.

Then she let me go, and in a husky, needy voice, she said, "Please, Christy. I'm so close. Make me cum."