Miranda only appearence in TBOGT, was in one of the trailers for the game. The trailer is a report from the show Fizz!, in with they describe the nightlife of Liberty City. She appears as one of the many celebrities that frequents the Bahama Mamas nightclub.
After crazed paparazzo Beverly Felton caught with her taking drugs inside her Stretch and took pictures while doing so, the reaction of the media was lukewarm at best, as they've got used to her attention whoring antics.
Her name and likeness are used in the film Meltdown, in which she is antagonist Abner Finch's significant other, but she is played by an actor or actress named Charlie Fleming.
Her appearance is drastically different in Grand Theft Auto V compared to The Ballad of Gay Tony. She is blonde and appears much thinner in 2008 compared to 2013. This could imply that she gained weight and/or dyed her hair but it is more likely a development oversight.