well, she either jumps or gets pushed... which would you prefer yourself? Personally, I think if she leaves then she'll forever be seen as a quitter in the outside world - she almost has an obligation to stay having volunteered and been picked... They can't keep her locked up, but how long does she think she'll have to stay before being nominated out anyway... is she that vain? Or has she seen her competition and realises she has no chance, so thinks better to jump soon?