It seems to be the strategy of both Tani and Andy to target Gauhar. In LF and even in episodes it has been seen how dey mock Gauhar, from making a skit on her health to constantly taunting her, making snide remarks and sniggering. Dey do it in such a subtle way that Gauhar even if she confronts dem, dey would make it seem like she's making a big deal out of nothing. Like on the first day of the task when Gauhar was asking all to listen to her and Andy mocked her and when she said he was being mean, he put up an innocent face and said tht he was just telling what Gauahr was saying, but both Tani and Andy were seen sniggering in the back ground.
Also Gauhar does not retaliate in kind and hence dey r getting away. Some days back in LF when Andy and Tani were cooking, Gauhar said something like dey were doing a good job of feeding ppl and dat they would be rewarded by God and Andy or Tani flippantly answered that yes dey knew dat and dat dey would be rewarded. Dey can't even graciously accept a compliment from Gauhar.
This kind of subtle bullying is no better than all the loud fights that take place and hope that Gauhar does tell Tania nd Andy what dey r doing is wrong coz it can get blown out into a major issue. But den again Andy and Tani would simply deny it and put the blame on Gauhar's shoulders.