Whilst I personally don't like her, and haven't bought into the poor defenceless ickle me act - she has shown herself to be two faced.
Martin had done a really nasty trial, and brought back food for the camp (and would have got more had Ant and Dec told him about the dropped stars (like they helped Adam last night)...... Adam, the other water carrier had been lounging around camp all the time, so why hadn't HE been off topping up the water? surely they don't have to go in pairs to do their jobs around camp.
Even while they were all having a pop at Martin, Adam didn't jump up and say "I'll go and get the ruddy water" - and I didn't hear Scarlett telling Danny off for speaking for her like she did when Martin stood up for her!
As has been said, she has either been Vice President or President since the beginning, and hasn't really had any real work to do - just sit around "supervising"
And as for the Bells Palsy? It's not a permanent thing - it happens and then your face goes back to normal after a time .... and it doesn't affect the rest of your body. Scarlett's face is definitely not still frozen given the range of expressions and movement she has displayed.
It certainly doesn't affect your physical activity - a relatively famous sufferer was Mark Phillips (Princess Anne's ex husband). His Bells Palsy didn't stop him carrying on with his equine business as normal.
That said, Scarlett clearly does have some other health issues (I'd hazard a guess at something like anorexia as her arms and legs are so thin), but it's not the Bells Palsy that is giving her medical immunity.