I feel she is a matured 16 year old girl who has the capacity in adjusting to a new environment. She has managed to make a stand already with SS. The fact SS listened to her and approached K to bring Pratigya back was very important move for me. He did not have to take her advice or even give her a chance. I saw a softened facial expression on SS's face when Ganga asked about Pratigya. He very affectionately said that she is his baba's wife.
In my opinion Ganga will be portrayed as a SAGE. She will be playing an important role in cleaning up the evil of TN. As it mentioned in the article that her presence will create ripples in TN.
I was struck by this thought while watching her conversation with SS. I might be completely wrong.
Anu