Use this revelation as leverage...

"Do you have any others?" you ask neutrally.

"Yeah," she sniffs. "A few more. God knows where the rest of them are."

"I'd like to see them." you say.

Ellen blushes. "Oh, no, I hate them. They're embarrassing."

"Well, I think they're hot. Ellen, your father is going to ask me how is little girl is doing. Do you want me to tell him that you've been nose-deep in black cock?"

She stiffens, and stares at you with her big blue eyes. The betrayal dawns on her.