"That's only a face a mother would like."
--Diane about Chucky.
Diane is a part of a con-artist couple, with her husband Russ.
Bride of Chucky (1998)
They purposely run into Jesse and Jade in their suite, with Diane dressed in lingerie and Russ wearing a robe and boxers. They pretend to be newlyweds, mistake that the suite is theirs, and then small talk with the couple about their two dolls. Diane finds Tiffany cute, but is put off by Chucky's disfigured face.
While her husband distracts them, Diane steals Jesse's wallet, with the $500 from Tiffany. After Jesse and Jade refuse to share a room with them, they leave back to their room, which is right next door. Tiffany, seeing how they stole the money, attacks later at night.
While having sex back in their room, she sees Tiffany's reflection from the ceiling, and tries to tell her husband, but to no avail. Tiffany throws an empty wine bottle at the mirrored ceiling, smashing it and sending large shards of glass down onto them, killing them instantly. Chucky then proposes to Tiffany, with Diane's ring. Their bodies are found on the bed by a maid the next day.