He's disgusted but resigned.

Frank glanced at David, wondering how he'd react to the sight of his daughter being railed, and her lewd invitation to him to join in. The man glared at Tara, shaking his head in disgust.

"You're a filthy fucking slut," he snarled, then glanced at the man stuffing his daughter's cunt "Go for it Mike. I gave up on the bitch long ago. And if you guys want to fuck her too, I could care less. Sounds like you've already been tapping her, right Frank?"

"Yep. She came begging for it. I don't say no to free pussy."

"No worries. You want some more of her?"

"I'm more interested in what we came for," Frank replied, turning his attention back to Tara who was groaning under the thrusts of the other man. "Did you see a brunette called Carol in here when you came in to fuck?"

"Don't...don't know her name...some bitch wanted to borrow some lingerie...told her....oh Fuck Harder! Harder!...where my bedroom was...and Mom's....Give it to Me! Oh Fuck I'm So Fuckin' Close! Daddy! Come Fuck Me Daddy! Make me Come on Your Hard Cock! All of You! Fuck Me! Please!"