[tr1cky]

Steph craves fame more than the rest. At her level, winning cbb would be a huge boost to her diminishing career.
Megan was better looking than her and a potential vote splitter.
Moreover, I think the Steph/Jeremy thing was primarily her answer to Megan/Scotty.
She'll also be asking herself what she has done to win more votes than Megan. Whatever she decides is the answer, she will up it.
And forget the crocodile tears; IMO, if the house burned down while she was outside she would be thinking about the media coverage coming her way.