What could she tell her fiancé about her plan?

If she told Anthony that she arranged for Claudia and Demetrius to be photographed sleeping together, Anthony would never let her get away with it.

Last night, Anthony had gone missing in action at the engagement party, thoroughly humiliating Kristy in front of their guests. Kristy had considered calling off the engagement altogether but not in the way it almost happened Last night.

She was unwilling to accept the notion of Anthony and Claudia making a fool out of her.

She wanted to play a trick on Anthony and make him feel how she felt last night when he suddenly disappeared right before the start of their engagement ceremony.