Well part of it is probably because Cirie and Parvati are still promising Final 3 status. If Amanda believes her then she would have no reason to try and work things around. That said, you would have think she would've learnt from last season where she basically lost because she didn't show the jury she was capable of making power moves (although she did make some during her season just too UTR-ish). She's talked about "Game On!" and mixing things up for multiple episodes now. Is she ever going to make a big move?