From what it appears to me, she is just standing in the middle of a turbulent river and only hopes to come out of it alive, which will mean that she passed the exam.
I don't think Bhabho intends to just break her down -- or to test her limit -- Bhabho wants to see how she adapts herself in the role of a beendhni. And that's what Sandhya had set out to do as well -- to prove that along with being educated, and perhaps because of it, she is able to adjust and learn new things quickly. So I would have expected her to learn about the village -- be proactive in trying to find out how to live there and how to impress Maasa and Bhabho -- esp since some of the other women there are quite nice to her. She could have definitely taken their help. But she's just standing there all helpless.
Even in today's episode, how come the smart Sandhya just chose to sit there in the cold waiting for someone to come help her? The test wasn't supposed to kill her...if it was a test, she should have solved it with her own creativity or at least some confidence.
Even though this village segment is going to bring out Sandhya in positive light in the end, I think creatives are kind of losing Sandhya's strong and smart character along the way. She wasn't the type to be helpless and dependent. What happened?