Ok so, this discussion I initiated in another thread, but since Bani is Adi Naagin, it deserves a separate thread devoted to discussion.
I was rewatching the jungle scene on Prayag pahadi where Bani was defending Jai before Veer. When I carefully watched it again, It felt Bani is deliberately defending Jai here like she is trying to make him believe that yes I believe you, you have got me.
But aisa bhi to ho sakta hai that Bani is playing a double game here. She did not initiate it before marriage, but definitely after Ponky's engagement.
Adi Naga and Adi Naagin ka gandh tab tak kisi ko nahi aata jab tak kisi masoom ki jaan na jaye. Bani understood that she did not kill Teer basis this logic. Matlab thoda sa bhi sahi, uske dimaag me ye baat bhi aa sakti hai that Jai ne kisi masoom ki jaan li ho?? It is a possibility right??
Usse lag sakta hai ki Jai ne anjaane me kisi innocent ki jaan li ho, and she starts investigating on her own regarding Teer's death, behind the scenes, and comes to know Jai's truth. Her reason to save Jai could also be because she wants to punish and avenge him herself.
See, Bani's behavior with Veer and family is but natural, because they are mortal enemies. She does not trust them, neither she cares for them, neither she is emotionally invested in them. So she does not need to clarify her stand there. But, I think she has come to trust Veer, even though little, which is why she grabbed Veer's jacket and did not take Jai's support. Infact, her turning around to look back at Jai could also be because she wanted to see if he tries to stop her or not.
Her blind defense of Jai could be her tactic to convince Jai that she is on his side, but ultimately she will be on the side of the truth. Jo galat hai woh galat hai, chahe koi bhi ho. Her not hurting Morni till now could be because she doesn't know yet, she is another partner in crime.
Agar dushman ho kar bhi woh Veer ki jaan bachati hai ye bolke ki woh bebas pe vaar nahi karti. To ye Jai ko sazaa dena se bhi peech nahi hategi. She stands for justice at all costs. So it could be she knows Jai's truth and wants to get to know who is trying to harm her and her clan because she knows Jai alone is incapable of doing so.
Additionally, I would say she is Sheshnagvanshi rakshak Adi Naagin. Showing her to be dim and stupid kuch jyaada hi galat ho jayega. Aur ye Kalyug ki kahaani hai. Veer obsessive ke saath saath sharp hai, Jai Adi Naagin ka joda hone ke saath saath kamina bhi hai, to Bani Adi Naagin ki tarah strong hone ke saath saath smart bhi to ho sakti hai na. What do you guys think?