Sophia’s fingers are buried knuckle-deep inside me when Mom’s voice floats up the stairs.

“Girls? You asleep?”

I freeze, pussy clenching around her. She doesn’t. She curls her fingers harder, rubbing that spot until my eyes roll back.

“Answer her,” Sophia whispers, lips brushing my ear. “Or I’ll make you scream.”

“Yes, Mom, we’re… going to bed,” I manage, voice shaky.

“Goodnight, sweethearts!”

Footsteps retreat. Sophia laughs softly, wicked.

“Good girl.” She pumps her fingers faster, thumb circling my clit. “Now come again. Quietly.”

I hate how fast she gets me there. My second orgasm crashes over me, deeper, wetter. My walls flutter and squeeze, a fresh gush soaking her...