What Thamarai may not realise that she is showing the worst of herself too. She knows fighting with Priyanka spices things up for Thamarai, cause other hm mostly keeps their mouth shout and won't continue to argue with Thamarai as they know it's hopeless, while Priyanka is dumb to just keep fighting and shouting untill the other people stop.
Thamarai is bringing worst out of herself being the most illogical contestant. But who has more to lose in these fights, looking way things are going on currently, Priyanka has to lose more. Thamarai doesn't having much to lose if she has to consider her pole position in the beginning of the show.