This. If she didn't inspire strange jealousy/moral condemnation from Dinah (Who, by the way, has killed people.) I would think she would be a fun way to confound a happy couple. If they were both talking about how psycho she was, and Dinah told Ollie about *her* stalker-crazy fans (ahem, Ras).
If it were Dinah and Ollie against a murderous female Pepe LePew, it would be a great story. But no. It has to be darrrrrrrrrrrrrk and grrrrrrrrrrrritty and dramatic.