She's definitely a nagin. I think that for confirmed today 😆
But you know what I found interesting? The fact that Hritik protected her ears from the music and prevented her from turning into a snake. Could that maybe be symbolic?
As for the painting, I wasn't suspicious before, but after the promo, I definitely am LOL. I think all the Shivanya interactions were done purposefully. She kept on coughing when serving -- everyone noticed that/ her. She played coy with Hritik -- he became even more curious about her. She saved him from falling off the cliff -- he now trusts her and sees her as good. She refused his help -- making him think that she wasn't after him/ is harmless. Now I feel like she also masterminded the whole chote malik call to make Hritik run towards that room -- remember, she was the one who sat outside near that place in the first place 😆
After the promo, I feel like while a lot of their interactions happened by pure chance (fireflies, Hritik finding her house, etc.), many of them were also orchestrated by Shivanya. So the her pointing out the painting seems deliberate. But I think she's also been genuinely taken aback by his warm, fun personality.
In regards to the chanting tune, it's from Baahubali -- Siva sivaya potri.