[Ghostinthehouse]

It's obvious that Charlie is trying to push Rodrigo to leave. And in the process bring down Rodrigo's popularity. They know Rod is well liked and the gang of Charlie/Lisa/David and Bea want to share the winnings when they have got rid of everyone else. It's also one of the reasons they encourage Sophie to make a tit of herself all the time and give her loads of their drink - letting Sophie ruin it for herself- not that that drunk slag Sophie needs any help in making herself look a tit!