Diane, played by Janet Kidder, is a character in the film Bride of Chucky.
Diane and her husband, Russ run a con on Jesse Miller and Jade Kincaid at the motel. They pretend to be newly weds and while Russ distracts them, Diane steals Jesse's wallet with Tiffany's money in it.
The two then return to their room. While the two are about to have sex, Tiffany throws a champagne bottle into the ceiling mirror causing the shards to kill both Diane and Russ. Chucky is so impressed he asks Tiffany to marry him.