With Trisha soon leaving KKN, someone else will have to step in and take her place. And I was wondering whether Tarini could be that person? If that happens, it can lead to a lot of possibilities. For instance, everybody at KKN is so judgemental about Kabir, that they'll be quick to assume that he offered the job to Tarini as a personal favour. Ananya, ofcourse, will not like it and we may get to see an even more protective side of her, defending Kabir in front of her friends.
Also, this way Tarini might end up playing cupid between KaYa and maybe even develop her own equation with Ananya, and on the other hand, Ananya will be able to get a clearer understanding of Kabir-Tarini's friendship.
Right now there is no other way where I can see Tarini actually being actively involved in the current scenario - considering how KaYa are always at KKN and Tarini shows up like...every once in a while.