MTV’s The City Season 2: Why is Olivia on the show?

First of all, I don’t what the show’s ratings have been, but I’m surprised to see it go on to a second season. I like Whitney, but she’s boring to watch on tv as a featured “actress.” Olivia kept the show going last season and she’s back now working for Elle magazine while Whitney works part-time at her old haunt People’s Revolution and is starting her own clothing line (could see that coming from a mile away). Now that they’re working in separate jobs and are not friends, why is Olivia on the show?